From c0e44820e9049bd68d8d3d5e80dcadf7c3e9a117 Mon Sep 17 00:00:00 2001
From: Psychpsyo <psychpsyo@gmail.com>
Date: Fri, 13 Jun 2025 17:54:29 +0200
Subject: [PATCH] Tests: Add doctypes to remaining test cases

---
 Tests/LibWeb/Layout/expected/block-and-inline/abspos-br.txt | 4 ++--
 .../block-with-hidden-overflow-after-sibling-float.txt      | 4 ++--
 .../block-and-inline/box-with-clearance-and-margin-top.txt  | 4 ++--
 .../expected/block-and-inline/button-baseline-align.txt     | 4 ++--
 .../Layout/expected/block-and-inline/button-image-only.txt  | 4 ++--
 .../button-should-have-vertically-aligned-content.txt       | 4 ++--
 .../button-with-block-content-baseline-align.txt            | 4 ++--
 .../button-with-multiple-words-text-node-label.txt          | 4 ++--
 .../button-with-text-node-label-and-font-size.txt           | 4 ++--
 .../block-and-inline/button-with-text-node-label.txt        | 4 ++--
 .../clear-both-from-inline-formatting-context.txt           | 4 ++--
 Tests/LibWeb/Layout/expected/block-and-inline/clearfix.txt  | 4 ++--
 Tests/LibWeb/Layout/expected/block-and-inline/float-1.txt   | 4 ++--
 Tests/LibWeb/Layout/expected/block-and-inline/float-3.txt   | 4 ++--
 .../float-left-and-right-with-justified-text-in-between.txt | 6 +++---
 .../float-left-and-right-with-text-in-between.txt           | 6 +++---
 .../float-max-content-containing-block-flex-display.txt     | 4 ++--
 .../block-and-inline/float-max-content-containing-block.txt | 4 ++--
 .../float-vertical-offset-by-preceding-float.txt            | 4 ++--
 .../block-and-inline/floats-and-negative-margins.txt        | 4 ++--
 .../forced-break-stops-non-whitespace-sequence.txt          | 4 ++--
 .../expected/block-and-inline/inline-block-baseline-1.txt   | 6 +++---
 .../expected/block-and-inline/inline-block-baseline-2.txt   | 6 +++---
 .../inline-box-positioned-with-top-left.txt                 | 4 ++--
 .../inline-box-with-vertical-margins-vertical-align-top.txt | 4 ++--
 .../block-and-inline/inline-box-with-vertical-margins.txt   | 4 ++--
 .../Layout/expected/block-and-inline/margin-collapse-1.txt  | 4 ++--
 .../Layout/expected/block-and-inline/margin-collapse-2.txt  | 4 ++--
 .../Layout/expected/block-and-inline/margin-collapse-3.txt  | 4 ++--
 .../Layout/expected/block-and-inline/margin-collapse-4.txt  | 4 ++--
 .../block-and-inline/relpos-inline-element-js-offsets.txt   | 4 ++--
 .../expected/block-and-inline/relpos-inline-elements.txt    | 4 ++--
 .../expected/block-and-inline/single-br-inline-layout.txt   | 4 ++--
 .../flex/br-element-does-not-get-blockified-by-itself.txt   | 4 ++--
 Tests/LibWeb/Layout/expected/grid/item-column-span-2.txt    | 4 ++--
 .../Layout/expected/grid/item-span-exceeds-columns-size.txt | 4 ++--
 Tests/LibWeb/Layout/expected/grid/placement-4.txt           | 6 +++---
 Tests/LibWeb/Layout/input/block-and-inline/abspos-br.html   | 1 +
 .../block-with-hidden-overflow-after-sibling-float.html     | 1 +
 .../block-and-inline/box-with-clearance-and-margin-top.html | 1 +
 .../input/block-and-inline/button-baseline-align.html       | 1 +
 .../Layout/input/block-and-inline/button-image-only.html    | 1 +
 .../button-should-have-vertically-aligned-content.html      | 1 +
 .../button-with-block-content-baseline-align.html           | 1 +
 .../button-with-multiple-words-text-node-label.html         | 1 +
 .../button-with-text-node-label-and-font-size.html          | 1 +
 .../input/block-and-inline/button-with-text-node-label.html | 1 +
 .../clear-both-from-inline-formatting-context.html          | 1 +
 Tests/LibWeb/Layout/input/block-and-inline/clearfix.html    | 1 +
 Tests/LibWeb/Layout/input/block-and-inline/float-1.html     | 1 +
 Tests/LibWeb/Layout/input/block-and-inline/float-3.html     | 1 +
 ...float-left-and-right-with-justified-text-in-between.html | 1 +
 .../float-left-and-right-with-text-in-between.html          | 1 +
 .../float-max-content-containing-block-flex-display.html    | 1 +
 .../float-max-content-containing-block.html                 | 1 +
 .../float-vertical-offset-by-preceding-float.html           | 1 +
 .../input/block-and-inline/floats-and-negative-margins.html | 1 +
 .../forced-break-stops-non-whitespace-sequence.html         | 1 +
 .../html-element-height-quirks-mode-on.html                 | 1 +
 .../input/block-and-inline/inline-block-baseline-1.html     | 1 +
 .../input/block-and-inline/inline-block-baseline-2.html     | 1 +
 .../inline-box-positioned-with-top-left.html                | 1 +
 ...inline-box-with-vertical-margins-vertical-align-top.html | 1 +
 .../block-and-inline/inline-box-with-vertical-margins.html  | 1 +
 .../Layout/input/block-and-inline/margin-collapse-1.html    | 1 +
 .../Layout/input/block-and-inline/margin-collapse-2.html    | 1 +
 .../Layout/input/block-and-inline/margin-collapse-3.html    | 1 +
 .../Layout/input/block-and-inline/margin-collapse-4.html    | 1 +
 .../narrow-bfc-width-to-avoid-overlap-with-floats.html      | 1 +
 ...entage-height-box-nested-into-percentage-height-box.html | 4 ++++
 .../block-and-inline/percentage-height-in-quirks-mode.html  | 1 +
 .../block-and-inline/relpos-inline-element-js-offsets.html  | 1 +
 .../input/block-and-inline/relpos-inline-elements.html      | 1 +
 .../input/block-and-inline/single-br-inline-layout.html     | 1 +
 .../flex/br-element-does-not-get-blockified-by-itself.html  | 3 ++-
 Tests/LibWeb/Layout/input/grid/item-column-span-2.html      | 1 +
 .../Layout/input/grid/item-span-exceeds-columns-size.html   | 1 +
 Tests/LibWeb/Layout/input/grid/placement-4.html             | 1 +
 78 files changed, 124 insertions(+), 80 deletions(-)

diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/abspos-br.txt b/Tests/LibWeb/Layout/expected/block-and-inline/abspos-br.txt
index 8d8e0fd15c9..a2f6cfc5b83 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/abspos-br.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/abspos-br.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x34 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x18 children: inline
       frag 0 from TextNode start: 0, length: 1, rect: [8,8 9.34375x18] baseline: 13.796875
           "a"
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x34]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x18]
       TextPaintable (TextNode<#text>)
       TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/block-with-hidden-overflow-after-sibling-float.txt b/Tests/LibWeb/Layout/expected/block-and-inline/block-with-hidden-overflow-after-sibling-float.txt
index 2c69f7bf8c1..bc9197ab066 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/block-with-hidden-overflow-after-sibling-float.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/block-with-hidden-overflow-after-sibling-float.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x52 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x36 children: not-inline
       BlockContainer <div> at (8,8) content-size 784x36 children: not-inline
         BlockContainer <(anonymous)> at (8,8) content-size 784x0 children: inline
@@ -43,7 +43,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
           TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x52]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x36]
       PaintableWithLines (BlockContainer<DIV>) [8,8 784x36]
         PaintableWithLines (BlockContainer(anonymous)) [8,8 784x0]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/box-with-clearance-and-margin-top.txt b/Tests/LibWeb/Layout/expected/block-and-inline/box-with-clearance-and-margin-top.txt
index 8bffb30adc7..41c71497fc4 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/box-with-clearance-and-margin-top.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/box-with-clearance-and-margin-top.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x267 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x110 children: not-inline
       BlockContainer <div> at (8,8) content-size 784x110 children: not-inline
         BlockContainer <div.square.white> at (8,8) content-size 100x100 floating [BFC] children: not-inline
@@ -7,7 +7,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         BlockContainer <div.square.black> at (8,218) content-size 49x49 floating [BFC] children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x267]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x110] overflow: [8,8 784x259]
       PaintableWithLines (BlockContainer<DIV>) [8,8 784x110] overflow: [8,8 784x259]
         PaintableWithLines (BlockContainer<DIV>.square.white) [8,8 100x100]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-baseline-align.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-baseline-align.txt
index 24a1ec2cf3e..a3cbc8a60a0 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-baseline-align.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-baseline-align.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x66 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x50 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [8,8 61.1875x50] baseline: 37
       BlockContainer <div.ib> at (8,8) content-size 61.1875x50 inline-block [BFC] children: inline
@@ -22,7 +22,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x66]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x50]
       PaintableWithLines (BlockContainer<DIV>.ib) [8,8 61.1875x50]
         PaintableWithLines (BlockContainer<DIV>.label) [8,26 19.828125x25]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-image-only.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-image-only.txt
index 820fc197eaf..f40e986ddec 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-image-only.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-image-only.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x440 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x424 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [13,10 420x420] baseline: 422
       BlockContainer <button> at (13,10) content-size 420x420 inline-block [BFC] children: not-inline
@@ -12,7 +12,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
             TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x440]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x424]
       PaintableWithLines (BlockContainer<BUTTON>) [8,8 430x424]
         PaintableWithLines (BlockContainer(anonymous)) [13,10 420x420]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-should-have-vertically-aligned-content.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-should-have-vertically-aligned-content.txt
index 8ac328d3b56..49c2d48c1b1 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-should-have-vertically-aligned-content.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-should-have-vertically-aligned-content.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x216 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x200 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [22,19 48.6875x178] baseline: 82.796875
       TextNode <#text>
@@ -22,7 +22,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
               TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x216]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x200]
       PaintableWithLines (BlockContainer<BUTTON>.button.border-black) [8,8 76.6875x200]
         PaintableWithLines (BlockContainer(anonymous)) [22,19 48.6875x178]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-block-content-baseline-align.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-block-content-baseline-align.txt
index 7e4ca113bbf..6d6d21fa6e1 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-block-content-baseline-align.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-block-content-baseline-align.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x66 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x50 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [8,8 61.1875x50] baseline: 37
       BlockContainer <div.ib> at (8,8) content-size 61.1875x50 inline-block [BFC] children: inline
@@ -27,7 +27,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x66]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x50]
       PaintableWithLines (BlockContainer<DIV>.ib) [8,8 61.1875x50]
         PaintableWithLines (BlockContainer<DIV>.label) [8,26 19.828125x25]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-multiple-words-text-node-label.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-multiple-words-text-node-label.txt
index c37eed8f498..096039daaa7 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-multiple-words-text-node-label.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-multiple-words-text-node-label.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x38 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x22 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [13,10 49.921875x18] baseline: 15.796875
       BlockContainer <button> at (13,10) content-size 49.921875x18 inline-block [BFC] children: not-inline
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
             TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x38]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x22]
       PaintableWithLines (BlockContainer<BUTTON>) [8,8 59.921875x22]
         PaintableWithLines (BlockContainer(anonymous)) [13,10 49.921875x18]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label-and-font-size.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label-and-font-size.txt
index 633c37e8912..e65971c1fe8 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label-and-font-size.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label-and-font-size.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x75 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x59 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [13,10 111.65625x55] baseline: 43.890625
       BlockContainer <button> at (13,10) content-size 111.65625x55 inline-block [BFC] children: not-inline
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
             TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x75]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x59]
       PaintableWithLines (BlockContainer<BUTTON>) [8,8 121.65625x59]
         PaintableWithLines (BlockContainer(anonymous)) [13,10 111.65625x55]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label.txt b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label.txt
index 7a3677a8b08..192c740a583 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/button-with-text-node-label.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x38 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x22 children: inline
       frag 0 from BlockContainer start: 0, length: 0, rect: [13,10 37.21875x18] baseline: 15.796875
       BlockContainer <button> at (13,10) content-size 37.21875x18 inline-block [BFC] children: not-inline
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
             TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x38]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x22]
       PaintableWithLines (BlockContainer<BUTTON>) [8,8 47.21875x22]
         PaintableWithLines (BlockContainer(anonymous)) [13,10 37.21875x18]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/clear-both-from-inline-formatting-context.txt b/Tests/LibWeb/Layout/expected/block-and-inline/clear-both-from-inline-formatting-context.txt
index b14ed3758c9..e9153f44a5e 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/clear-both-from-inline-formatting-context.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/clear-both-from-inline-formatting-context.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x175.875 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x0 children: not-inline
       BlockContainer <div> at (8,8) content-size 784x0 children: inline
         TextNode <#text>
@@ -20,7 +20,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x175.875]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x0]
       PaintableWithLines (BlockContainer<DIV>) [8,8 784x0]
         PaintableWithLines (BlockContainer<H1>.left) [8,29.4375 28.53125x37]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/clearfix.txt b/Tests/LibWeb/Layout/expected/block-and-inline/clearfix.txt
index 2d008679efa..1c3f337953b 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/clearfix.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/clearfix.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x157 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x100 children: not-inline
       BlockContainer <div> at (8,8) content-size 784x100 children: not-inline
         BlockContainer <(anonymous)> at (8,8) content-size 784x0 children: inline
@@ -15,7 +15,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x157]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x100]
       PaintableWithLines (BlockContainer<DIV>) [8,8 784x100]
         PaintableWithLines (BlockContainer(anonymous)) [8,8 784x0]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-1.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-1.txt
index ffeb882b311..c4ee8567aee 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-1.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-1.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x358 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x342 children: not-inline
       BlockContainer <(anonymous)> at (8,8) content-size 784x0 children: inline
         TextNode <#text>
@@ -89,7 +89,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x358]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x342]
       PaintableWithLines (BlockContainer(anonymous)) [8,8 784x0]
       PaintableWithLines (BlockContainer<DIV>) [8,8 784x0]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-3.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-3.txt
index d937bb43ec2..39ab3e5910e 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-3.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-3.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x136 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 780x120 children: not-inline
       BlockContainer <(anonymous)> at (8,8) content-size 780x0 children: inline
         TextNode <#text>
@@ -25,7 +25,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x136]
     PaintableWithLines (BlockContainer<BODY>) [8,8 780x120]
       PaintableWithLines (BlockContainer(anonymous)) [8,8 780x0]
       PaintableWithLines (BlockContainer<DIV>#top) [8,8 780x100]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-justified-text-in-between.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-justified-text-in-between.txt
index 6fe6ccfbdd9..b76ce535a31 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-justified-text-in-between.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-justified-text-in-between.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x450 [BFC] children: not-inline
     BlockContainer <body> at (252,10) content-size 538x432 children: inline
       frag 0 from TextNode start: 1, length: 5, rect: [554,10 63.71875x23] baseline: 17.5
           "Lorem"
@@ -206,8 +206,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       BlockContainer <div.right> at (489,213) content-size 300x200 floating [BFC] children: not-inline
       TextNode <#text>
 
-ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x452]
     PaintableWithLines (BlockContainer<BODY>) [251,9 540x434]
       PaintableWithLines (BlockContainer<DIV>.left) [252,10 302x202]
       PaintableWithLines (BlockContainer<DIV>.right) [488,212 302x202]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-text-in-between.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-text-in-between.txt
index 06459e012e4..f4bf97199c0 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-text-in-between.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-left-and-right-with-text-in-between.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x450 [BFC] children: not-inline
     BlockContainer <body> at (252,10) content-size 538x432 children: inline
       frag 0 from TextNode start: 1, length: 21, rect: [554,10 228.375x23] baseline: 17.5
           "Lorem ipsum dolor sit"
@@ -42,8 +42,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       BlockContainer <div.right> at (489,213) content-size 300x200 floating [BFC] children: not-inline
       TextNode <#text>
 
-ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x452]
     PaintableWithLines (BlockContainer<BODY>) [251,9 540x434]
       PaintableWithLines (BlockContainer<DIV>.left) [252,10 302x202]
       PaintableWithLines (BlockContainer<DIV>.right) [488,212 302x202]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt
index b8056332c58..7b9be23d2a4 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block-flex-display.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x26 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x0 children: not-inline
       Box <div.display_flex> at (8,8) content-size 23.609375x18 floating flex-container(row) [FFC] children: not-inline
         BlockContainer <div> at (8,8) content-size 23.609375x18 flex-item [BFC] children: not-inline
@@ -14,7 +14,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
               TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x26]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x0] overflow: [8,8 23.609375x18]
       PaintableBox (Box<DIV>.display_flex) [8,8 23.609375x18]
         PaintableWithLines (BlockContainer<DIV>) [8,8 23.609375x18]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt
index d7cf80346ac..769266a54ba 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-max-content-containing-block.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x26 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x0 children: not-inline
       BlockContainer <div> at (8,8) content-size 23.609375x18 floating [BFC] children: not-inline
         BlockContainer <span> at (8,8) content-size 14.265625x18 floating [BFC] children: inline
@@ -12,7 +12,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
           TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x26]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x0] overflow: [8,8 23.609375x18]
       PaintableWithLines (BlockContainer<DIV>) [8,8 23.609375x18]
         PaintableWithLines (BlockContainer<SPAN>) [8,8 14.265625x18]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/float-vertical-offset-by-preceding-float.txt b/Tests/LibWeb/Layout/expected/block-and-inline/float-vertical-offset-by-preceding-float.txt
index c5df919fd2c..7059ed06d10 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/float-vertical-offset-by-preceding-float.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/float-vertical-offset-by-preceding-float.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x136 [BFC] children: not-inline
     BlockContainer <body> at (8,16) content-size 784x54 children: not-inline
       BlockContainer <(anonymous)> at (8,16) content-size 784x0 children: inline
         BlockContainer <div> at (8,16) content-size 50x50 floating [BFC] children: not-inline
@@ -21,7 +21,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x136]
     PaintableWithLines (BlockContainer<BODY>) [8,16 784x54] overflow: [8,16 784x120]
       PaintableWithLines (BlockContainer(anonymous)) [8,16 784x0]
         PaintableWithLines (BlockContainer<DIV>) [8,16 50x50]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/floats-and-negative-margins.txt b/Tests/LibWeb/Layout/expected/block-and-inline/floats-and-negative-margins.txt
index d68029db292..a899639eade 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/floats-and-negative-margins.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/floats-and-negative-margins.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x216 [BFC] children: not-inline
     BlockContainer <body> at (100,8) content-size 200x200 children: not-inline
       BlockContainer <div.row> at (50,8) content-size 250x200 children: inline
         BlockContainer <div.item> at (50,8) content-size 125x18 floating [BFC] children: inline
@@ -14,7 +14,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x216]
     PaintableWithLines (BlockContainer<BODY>) [100,8 200x200] overflow: [50,8 250x200]
       PaintableWithLines (BlockContainer<DIV>.row) [50,8 250x200]
         PaintableWithLines (BlockContainer<DIV>.item) [50,8 125x18]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt b/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
index afe47a29e01..9b243bb5f9c 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/forced-break-stops-non-whitespace-sequence.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x43 [BFC] children: not-inline
     BlockContainer <body> at (8,13) content-size 784x17 children: not-inline
       BlockContainer <pre> at (9,14) content-size 782x15 children: inline
         InlineNode <span>
@@ -9,7 +9,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x43]
     PaintableWithLines (BlockContainer<BODY>) [8,13 784x17]
       PaintableWithLines (BlockContainer<PRE>) [8,13 784x17]
         PaintableWithLines (InlineNode<SPAN>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-1.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-1.txt
index 9efa9241189..5330409db13 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-1.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-1.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x112 [BFC] children: not-inline
     BlockContainer <body> at (10,10) content-size 780x94 children: inline
       frag 0 from TextNode start: 0, length: 13, rect: [10,33 103.140625x18] baseline: 13.796875
           "Hello friends"
@@ -18,8 +18,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         BlockContainer <(anonymous)> at (114.140625,103) content-size 202x0 children: inline
           TextNode <#text>
 
-ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x114]
     PaintableWithLines (BlockContainer<BODY>) [9,9 782x96]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>.ib) [113.140625,10 204x94]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-2.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-2.txt
index 88813bdaf69..a9b7e05ad9e 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-2.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-block-baseline-2.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x80 [BFC] children: not-inline
     BlockContainer <body> at (10,10) content-size 780x62 children: inline
       frag 0 from TextNode start: 0, length: 13, rect: [10,33 103.140625x18] baseline: 13.796875
           "Hello friends"
@@ -21,8 +21,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         BlockContainer <(anonymous)> at (114.140625,51) content-size 39.234375x0 children: inline
           TextNode <#text>
 
-ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x82]
     PaintableWithLines (BlockContainer<BODY>) [9,9 782x64]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>.ib) [113.140625,10 41.234375x62]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-positioned-with-top-left.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-positioned-with-top-left.txt
index 08be6d79082..c1571f7e2b8 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-positioned-with-top-left.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-positioned-with-top-left.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x36 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x20 children: inline
       frag 0 from TextNode start: 0, length: 14, rect: [8,8 112.421875x18] baseline: 13.796875
           "text text text"
@@ -14,7 +14,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x36]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x20]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<SPAN>.displaced_text) [150.421875,48 110.375x20]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.txt
index b743a9e88c1..6b7cf6b96a1 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x191 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x175 children: inline
       frag 0 from TextNode start: 0, length: 6, rect: [8,8 43.125x18] baseline: 13.796875
           "Well, "
@@ -11,7 +11,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x191]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x175]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>#inline-box) [51.125,58 100x100]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins.txt b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins.txt
index 9067a0f4366..16a8130f879 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/inline-box-with-vertical-margins.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x195 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x179 children: inline
       frag 0 from TextNode start: 0, length: 6, rect: [8,169 43.125x18] baseline: 13.796875
           "Well, "
@@ -11,7 +11,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x195]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x179]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (BlockContainer<DIV>#inline-box) [51.125,58 100x100]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-1.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-1.txt
index 3df430cdc53..09cac0f9f6e 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-1.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-1.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x279 [BFC] children: not-inline
     BlockContainer <body> at (8,25) content-size 784x229 children: not-inline
       BlockContainer <div#foo> at (34,26) content-size 100x100 children: inline
         frag 0 from TextNode start: 0, length: 3, rect: [34,26 27.15625x18] baseline: 13.796875
@@ -15,7 +15,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x279]
     PaintableWithLines (BlockContainer<BODY>) [8,25 784x229]
       PaintableWithLines (BlockContainer<DIV>#foo) [33,25 102x102]
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-2.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-2.txt
index 5cc00bbe90b..aa0cb9c43ec 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-2.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-2.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x352 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x336 children: not-inline
       BlockContainer <div#foo> at (9,9) content-size 100x100 children: inline
         frag 0 from TextNode start: 0, length: 3, rect: [9,9 27.15625x18] baseline: 13.796875
@@ -21,7 +21,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x352]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x336]
       PaintableWithLines (BlockContainer<DIV>#foo) [8,8 102x102]
         TextPaintable (TextNode<#text>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-3.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-3.txt
index 82f2a110577..f2994530683 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-3.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-3.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x366 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x350 children: not-inline
       BlockContainer <div#foo> at (8,8) content-size 100x100 children: not-inline
       BlockContainer <(anonymous)> at (8,133) content-size 784x0 children: inline
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x366]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x350]
       PaintableWithLines (BlockContainer<DIV>#foo) [8,8 100x100]
       PaintableWithLines (BlockContainer(anonymous)) [8,133 784x0]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-4.txt b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-4.txt
index b6b9c957edb..62afe5685b0 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-4.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/margin-collapse-4.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x166 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x150 children: not-inline
       BlockContainer <div#foo> at (8,8) content-size 100x50 children: not-inline
         BlockContainer <div#baz> at (8,8) content-size 50x50 children: not-inline
@@ -10,7 +10,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x166]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x150]
       PaintableWithLines (BlockContainer<DIV>#foo) [8,8 100x50]
         PaintableWithLines (BlockContainer<DIV>#baz) [8,8 50x50]
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
index 594170cf03a..4353b78ce54 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-element-js-offsets.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x169 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x148 children: not-inline
       BlockContainer <(anonymous)> at (8,8) content-size 784x18 children: inline
         InlineNode <span>
@@ -34,7 +34,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x169]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x148]
       PaintableWithLines (BlockContainer(anonymous)) [8,8 784x18]
         PaintableWithLines (InlineNode<SPAN>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
index 623db03f5e6..8fca923709a 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/relpos-inline-elements.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x34 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x18 children: inline
       frag 0 from TextNode start: 0, length: 4, rect: [8,8 35.15625x18] baseline: 13.796875
           "foo "
@@ -19,7 +19,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x34]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x18]
       TextPaintable (TextNode<#text>)
       PaintableWithLines (InlineNode<B>)
diff --git a/Tests/LibWeb/Layout/expected/block-and-inline/single-br-inline-layout.txt b/Tests/LibWeb/Layout/expected/block-and-inline/single-br-inline-layout.txt
index 8c1c13f0c82..422a3aab5a3 100644
--- a/Tests/LibWeb/Layout/expected/block-and-inline/single-br-inline-layout.txt
+++ b/Tests/LibWeb/Layout/expected/block-and-inline/single-br-inline-layout.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x38 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x22 children: not-inline
       BlockContainer <div#begin> at (8,8) content-size 784x2 children: not-inline
       BlockContainer <(anonymous)> at (8,10) content-size 784x18 children: inline
@@ -7,7 +7,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
       BlockContainer <div#end> at (8,28) content-size 784x2 children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x38]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x22]
       PaintableWithLines (BlockContainer<DIV>#begin) [8,8 784x2]
       PaintableWithLines (BlockContainer(anonymous)) [8,10 784x18]
diff --git a/Tests/LibWeb/Layout/expected/flex/br-element-does-not-get-blockified-by-itself.txt b/Tests/LibWeb/Layout/expected/flex/br-element-does-not-get-blockified-by-itself.txt
index 22ca714e3bb..8288d6865ed 100644
--- a/Tests/LibWeb/Layout/expected/flex/br-element-does-not-get-blockified-by-itself.txt
+++ b/Tests/LibWeb/Layout/expected/flex/br-element-does-not-get-blockified-by-itself.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x70 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x54 children: not-inline
       Box <div> at (8,8) content-size 784x54 flex-container(row) [FFC] children: not-inline
         BlockContainer <(anonymous)> at (8,8) content-size 55.359375x54 flex-item [BFC] children: inline
@@ -16,7 +16,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
           TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x70]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x54]
       PaintableBox (Box<DIV>) [8,8 784x54]
         PaintableWithLines (BlockContainer(anonymous)) [8,8 55.359375x54]
diff --git a/Tests/LibWeb/Layout/expected/grid/item-column-span-2.txt b/Tests/LibWeb/Layout/expected/grid/item-column-span-2.txt
index 123ae6c4859..cffc3b1a37f 100644
--- a/Tests/LibWeb/Layout/expected/grid/item-column-span-2.txt
+++ b/Tests/LibWeb/Layout/expected/grid/item-column-span-2.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x52 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x36 children: not-inline
       Box <div.container> at (8,8) content-size 784x36 [GFC] children: not-inline
         BlockContainer <(anonymous)> (not painted) [BFC] children: inline
@@ -19,7 +19,7 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
         TextNode <#text>
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x52]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x36]
       PaintableBox (Box<DIV>.container) [8,8 784x36]
         PaintableWithLines (BlockContainer<DIV>.item-left) [8,8 100x36]
diff --git a/Tests/LibWeb/Layout/expected/grid/item-span-exceeds-columns-size.txt b/Tests/LibWeb/Layout/expected/grid/item-span-exceeds-columns-size.txt
index 7e579fd1829..cbb91894220 100644
--- a/Tests/LibWeb/Layout/expected/grid/item-span-exceeds-columns-size.txt
+++ b/Tests/LibWeb/Layout/expected/grid/item-span-exceeds-columns-size.txt
@@ -1,11 +1,11 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (0,0) content-size 800x600 [BFC] children: not-inline
+  BlockContainer <html> at (0,0) content-size 800x116 [BFC] children: not-inline
     BlockContainer <body> at (8,8) content-size 784x100 children: not-inline
       Box <div.container> at (8,8) content-size 300x100 [GFC] children: not-inline
         BlockContainer <div.item> at (8,8) content-size 300x100 [BFC] children: not-inline
 
 ViewportPaintable (Viewport<#document>) [0,0 800x600]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x116]
     PaintableWithLines (BlockContainer<BODY>) [8,8 784x100]
       PaintableBox (Box<DIV>.container) [8,8 300x100]
         PaintableWithLines (BlockContainer<DIV>.item) [8,8 300x100]
diff --git a/Tests/LibWeb/Layout/expected/grid/placement-4.txt b/Tests/LibWeb/Layout/expected/grid/placement-4.txt
index 93df5e68146..9c1be42272e 100644
--- a/Tests/LibWeb/Layout/expected/grid/placement-4.txt
+++ b/Tests/LibWeb/Layout/expected/grid/placement-4.txt
@@ -1,5 +1,5 @@
 Viewport <#document> at (0,0) content-size 800x600 children: not-inline
-  BlockContainer <html> at (1,1) content-size 798x600 [BFC] children: not-inline
+  BlockContainer <html> at (1,1) content-size 798x60 [BFC] children: not-inline
     BlockContainer <body> at (10,10) content-size 780x42 children: not-inline
       Box <div.grid-container> at (11,11) content-size 778x40 [GFC] children: not-inline
         BlockContainer <div.a> at (12,12) content-size 776x18 [BFC] children: inline
@@ -11,8 +11,8 @@ Viewport <#document> at (0,0) content-size 800x600 children: not-inline
               "2"
           TextNode <#text>
 
-ViewportPaintable (Viewport<#document>) [0,0 800x600] overflow: [0,0 800x602]
-  PaintableWithLines (BlockContainer<HTML>) [0,0 800x602]
+ViewportPaintable (Viewport<#document>) [0,0 800x600]
+  PaintableWithLines (BlockContainer<HTML>) [0,0 800x62]
     PaintableWithLines (BlockContainer<BODY>) [9,9 782x44]
       PaintableBox (Box<DIV>.grid-container) [10,10 780x42]
         PaintableWithLines (BlockContainer<DIV>.a) [11,11 778x20]
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/abspos-br.html b/Tests/LibWeb/Layout/input/block-and-inline/abspos-br.html
index b84bcf9c2c8..cd6d1652ddb 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/abspos-br.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/abspos-br.html
@@ -1 +1,2 @@
+<!DOCTYPE html>
 a<br style="position:absolute;">b
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/block-with-hidden-overflow-after-sibling-float.html b/Tests/LibWeb/Layout/input/block-and-inline/block-with-hidden-overflow-after-sibling-float.html
index 95522929c9f..405f8130d03 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/block-with-hidden-overflow-after-sibling-float.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/block-with-hidden-overflow-after-sibling-float.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .a {
         float: left;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/box-with-clearance-and-margin-top.html b/Tests/LibWeb/Layout/input/block-and-inline/box-with-clearance-and-margin-top.html
index eb55f92bd49..6e79e02f0d5 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/box-with-clearance-and-margin-top.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/box-with-clearance-and-margin-top.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 .clearfix {
     clear: both;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-baseline-align.html b/Tests/LibWeb/Layout/input/block-and-inline/button-baseline-align.html
index 024c8a541e0..e563e2bf081 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-baseline-align.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-baseline-align.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .ib {
         display: inline-block;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-image-only.html b/Tests/LibWeb/Layout/input/block-and-inline/button-image-only.html
index 7a7b3ee2d54..75e1555c59c 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-image-only.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-image-only.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <button>
   <img
     src="data:image/jpeg;base64,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">
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-should-have-vertically-aligned-content.html b/Tests/LibWeb/Layout/input/block-and-inline/button-should-have-vertically-aligned-content.html
index 009a3327e1e..26a1a3896ef 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-should-have-vertically-aligned-content.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-should-have-vertically-aligned-content.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style type="text/css">
     .border-black {
         border: 10px solid black;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-with-block-content-baseline-align.html b/Tests/LibWeb/Layout/input/block-and-inline/button-with-block-content-baseline-align.html
index 38a4621026a..8f0025ddaf7 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-with-block-content-baseline-align.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-with-block-content-baseline-align.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .ib {
         display: inline-block;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-with-multiple-words-text-node-label.html b/Tests/LibWeb/Layout/input/block-and-inline/button-with-multiple-words-text-node-label.html
index 9fdf5bd5bf5..fb382a73bce 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-with-multiple-words-text-node-label.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-with-multiple-words-text-node-label.html
@@ -1 +1,2 @@
+<!DOCTYPE html>
 <button>A B C</button>
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label-and-font-size.html b/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label-and-font-size.html
index 36092f79e1b..4b283ce732e 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label-and-font-size.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label-and-font-size.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     button {
         font-size: 48px;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label.html b/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label.html
index 29b5ae59c2b..88150fdada4 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/button-with-text-node-label.html
@@ -1 +1,2 @@
+<!DOCTYPE html>
 <button>Test</button>
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/clear-both-from-inline-formatting-context.html b/Tests/LibWeb/Layout/input/block-and-inline/clear-both-from-inline-formatting-context.html
index a78f59fb3e0..16bf5543668 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/clear-both-from-inline-formatting-context.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/clear-both-from-inline-formatting-context.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 	.left {
 		float: left;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/clearfix.html b/Tests/LibWeb/Layout/input/block-and-inline/clearfix.html
index b15946a9794..302231cbfb3 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/clearfix.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/clearfix.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .clearfix {
         clear: both;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-1.html b/Tests/LibWeb/Layout/input/block-and-inline/float-1.html
index d4a9294d911..2115cd769fa 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-1.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-1.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-3.html b/Tests/LibWeb/Layout/input/block-and-inline/float-3.html
index aa328cf2503..2767f2b11bf 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-3.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-3.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     body {
         width: 780px;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-justified-text-in-between.html b/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-justified-text-in-between.html
index c2c59b44d65..9d2bb09a6b5 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-justified-text-in-between.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-justified-text-in-between.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 * {
     font: 20px SerenitySans;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-text-in-between.html b/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-text-in-between.html
index 64d6bc99f5f..1518d1d5008 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-text-in-between.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-left-and-right-with-text-in-between.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 * {
     font: 20px SerenitySans;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html
index 9d6580dc1b9..6a8a8e9cde7 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block-flex-display.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .display_flex {
         display: flex;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html
index 1f57df59738..df4bef0ebdd 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-max-content-containing-block.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     div {
         float: left;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/float-vertical-offset-by-preceding-float.html b/Tests/LibWeb/Layout/input/block-and-inline/float-vertical-offset-by-preceding-float.html
index 5373660b504..cca02acf2af 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/float-vertical-offset-by-preceding-float.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/float-vertical-offset-by-preceding-float.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <div style="height: 50px; width: 50px; background-color: blue; float: left"></div>
 <p>A<br>B<br>C
 </p><div style="height: 50px; width: 50px; background-color: green; float: left"></div>
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/floats-and-negative-margins.html b/Tests/LibWeb/Layout/input/block-and-inline/floats-and-negative-margins.html
index ab53a9a236c..8c7cbb3bf0c 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/floats-and-negative-margins.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/floats-and-negative-margins.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     width: 200px;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/forced-break-stops-non-whitespace-sequence.html b/Tests/LibWeb/Layout/input/block-and-inline/forced-break-stops-non-whitespace-sequence.html
index aca41f7820c..d1909828354 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/forced-break-stops-non-whitespace-sequence.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/forced-break-stops-non-whitespace-sequence.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <pre style="border: 1px solid black">
 <span> </span>
 </pre>
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/html-element-height-quirks-mode-on.html b/Tests/LibWeb/Layout/input/block-and-inline/html-element-height-quirks-mode-on.html
index 4f78655a4e0..18a6301fce5 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/html-element-height-quirks-mode-on.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/html-element-height-quirks-mode-on.html
@@ -1,3 +1,4 @@
+<!DOCTYPE quirks>
 <style>
     * {
         outline: 1px solid black !important;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-1.html b/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-1.html
index d91e0117ba9..33317a340c4 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-1.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-1.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 * {
     border: 1px solid black;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-2.html b/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-2.html
index 49a21a02c82..67607a0d3f5 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-2.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/inline-block-baseline-2.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 * {
     border: 1px solid black;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-positioned-with-top-left.html b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-positioned-with-top-left.html
index 34f2ab89c8e..3a152ad1339 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-positioned-with-top-left.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-positioned-with-top-left.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     body {
         font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.html b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.html
index c29aa6a08b3..eb27247d44f 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins-vertical-align-top.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     body {
         font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins.html b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins.html
index 5d979073686..212d8894a5f 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/inline-box-with-vertical-margins.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     body {
         font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-1.html b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-1.html
index 8e34e9204c4..a82ac42a71f 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-1.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-1.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-2.html b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-2.html
index 4d4d3c0d2ee..7edcf87026c 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-2.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-2.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-3.html b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-3.html
index 5d44bf21547..81f8558f992 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-3.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-3.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-4.html b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-4.html
index 056c983a373..05e38b6633f 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-4.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/margin-collapse-4.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 body {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/narrow-bfc-width-to-avoid-overlap-with-floats.html b/Tests/LibWeb/Layout/input/block-and-inline/narrow-bfc-width-to-avoid-overlap-with-floats.html
index 669a56ca3cc..da882890705 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/narrow-bfc-width-to-avoid-overlap-with-floats.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/narrow-bfc-width-to-avoid-overlap-with-floats.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 * {
     font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-box-nested-into-percentage-height-box.html b/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-box-nested-into-percentage-height-box.html
index d2a6e604f7c..85f4f8be62a 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-box-nested-into-percentage-height-box.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-box-nested-into-percentage-height-box.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 div {
     background-color: crimson;
@@ -6,4 +7,7 @@ div {
 body {
     height: 50%;
 }
+html {
+    height: 600px;
+}
 </style><div></div>
\ No newline at end of file
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-in-quirks-mode.html b/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-in-quirks-mode.html
index 00f538e7688..09158dab0f6 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-in-quirks-mode.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/percentage-height-in-quirks-mode.html
@@ -1,3 +1,4 @@
+<!DOCTYPE quirks>
 <style>
 div {
     background-color: crimson;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-element-js-offsets.html b/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-element-js-offsets.html
index ef0007ec68a..672ebe46b61 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-element-js-offsets.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-element-js-offsets.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 b, i {
     position: relative;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-elements.html b/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-elements.html
index dabe5600e3c..24ac593edaf 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-elements.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/relpos-inline-elements.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
 b {
     position: relative;
diff --git a/Tests/LibWeb/Layout/input/block-and-inline/single-br-inline-layout.html b/Tests/LibWeb/Layout/input/block-and-inline/single-br-inline-layout.html
index 709113949c8..91f50cf66bd 100644
--- a/Tests/LibWeb/Layout/input/block-and-inline/single-br-inline-layout.html
+++ b/Tests/LibWeb/Layout/input/block-and-inline/single-br-inline-layout.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     body {
         font-family: 'SerenitySans';
diff --git a/Tests/LibWeb/Layout/input/flex/br-element-does-not-get-blockified-by-itself.html b/Tests/LibWeb/Layout/input/flex/br-element-does-not-get-blockified-by-itself.html
index 139907ca3ec..abf82cf674a 100644
--- a/Tests/LibWeb/Layout/input/flex/br-element-does-not-get-blockified-by-itself.html
+++ b/Tests/LibWeb/Layout/input/flex/br-element-does-not-get-blockified-by-itself.html
@@ -1,4 +1,5 @@
-<!doctype><style>
+<!doctype html>
+<style>
 * { outline: 1px solid black; }
 div { display: flex; }
 </style>
diff --git a/Tests/LibWeb/Layout/input/grid/item-column-span-2.html b/Tests/LibWeb/Layout/input/grid/item-column-span-2.html
index e7ffb7b7d0f..0fd3f00968d 100644
--- a/Tests/LibWeb/Layout/input/grid/item-column-span-2.html
+++ b/Tests/LibWeb/Layout/input/grid/item-column-span-2.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .container {
         display: grid;
diff --git a/Tests/LibWeb/Layout/input/grid/item-span-exceeds-columns-size.html b/Tests/LibWeb/Layout/input/grid/item-span-exceeds-columns-size.html
index 87b17df492e..3a154784d41 100644
--- a/Tests/LibWeb/Layout/input/grid/item-span-exceeds-columns-size.html
+++ b/Tests/LibWeb/Layout/input/grid/item-span-exceeds-columns-size.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     .container {
         width: 300px;
diff --git a/Tests/LibWeb/Layout/input/grid/placement-4.html b/Tests/LibWeb/Layout/input/grid/placement-4.html
index 5f743f016f3..c56cb4a966e 100644
--- a/Tests/LibWeb/Layout/input/grid/placement-4.html
+++ b/Tests/LibWeb/Layout/input/grid/placement-4.html
@@ -1,3 +1,4 @@
+<!DOCTYPE html>
 <style>
     * {
         border: 1px solid black;