diff --git a/Libraries/LibWeb/CSS/StyleValues/ShorthandStyleValue.cpp b/Libraries/LibWeb/CSS/StyleValues/ShorthandStyleValue.cpp
index c0d52f5c902..65ad7630bca 100644
--- a/Libraries/LibWeb/CSS/StyleValues/ShorthandStyleValue.cpp
+++ b/Libraries/LibWeb/CSS/StyleValues/ShorthandStyleValue.cpp
@@ -383,6 +383,9 @@ String ShorthandStyleValue::to_string(SerializationMode mode) const
         auto& rows = longhand(PropertyID::GridTemplateRows)->as_grid_track_size_list();
         auto& columns = longhand(PropertyID::GridTemplateColumns)->as_grid_track_size_list();
 
+        if (areas.grid_template_area().size() == 0 && rows.grid_track_size_list().track_list().size() == 0 && columns.grid_track_size_list().track_list().size() == 0)
+            return "none"_string;
+
         auto construct_rows_string = [&]() {
             StringBuilder builder;
             size_t idx = 0;
diff --git a/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt b/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
index 437fcca9e23..9100ce10650 100644
--- a/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
+++ b/Tests/LibWeb/Text/expected/css/CSSStyleProperties-all-supported-properties-and-default-values.txt
@@ -383,7 +383,7 @@ All supported properties and their default values exposed from CSSStylePropertie
 'fontWidth': 'normal'
 'font-width': 'normal'
 'gap': 'normal'
-'grid': ''
+'grid': 'none'
 'gridArea': 'auto'
 'grid-area': 'auto'
 'gridAutoColumns': 'auto'
@@ -410,8 +410,8 @@ All supported properties and their default values exposed from CSSStylePropertie
 'grid-row-gap': 'normal'
 'gridRowStart': 'auto'
 'grid-row-start': 'auto'
-'gridTemplate': ''
-'grid-template': ''
+'gridTemplate': 'none'
+'grid-template': 'none'
 'gridTemplateAreas': 'none'
 'grid-template-areas': 'none'
 'gridTemplateColumns': 'none'
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-invalid.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-invalid.txt
index c2eb3b28f1e..c5519e59bb1 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-invalid.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-invalid.txt
@@ -2,17 +2,17 @@ Harness status: OK
 
 Found 34 tests
 
-21 Pass
-13 Fail
+16 Pass
+18 Fail
 Pass	e.style['grid'] = "none none" should not set the property value
 Pass	e.style['grid'] = "none []" should not set the property value
 Fail	e.style['grid'] = "10px" should not set the property value
 Fail	e.style['grid'] = "20%" should not set the property value
 Fail	e.style['grid'] = "5fr" should not set the property value
-Pass	e.style['grid'] = "[a]" should not set the property value
+Fail	e.style['grid'] = "[a]" should not set the property value
 Fail	e.style['grid'] = "[a] 10px" should not set the property value
 Fail	e.style['grid'] = "[a] 10px []" should not set the property value
-Pass	e.style['grid'] = "[]" should not set the property value
+Fail	e.style['grid'] = "[]" should not set the property value
 Fail	e.style['grid'] = "10px \"a\"" should not set the property value
 Fail	e.style['grid'] = "[] 10px \"a\"" should not set the property value
 Fail	e.style['grid'] = "10px [] \"a\"" should not set the property value
@@ -28,13 +28,13 @@ Pass	e.style['grid'] = "[a] \"a\" [a] [a]" should not set the property value
 Pass	e.style['grid'] = "\"a\" \"a\" [a] [a]" should not set the property value
 Pass	e.style['grid'] = "\"a\" [a] [a] / none" should not set the property value
 Pass	e.style['grid'] = "\"a\" \"a\" [a] [a] / none" should not set the property value
-Pass	e.style['grid'] = "none / \"a\"" should not set the property value
+Fail	e.style['grid'] = "none / \"a\"" should not set the property value
 Pass	e.style['grid'] = "\"a\" / none" should not set the property value
-Pass	e.style['grid'] = "none / [] \"a\"" should not set the property value
+Fail	e.style['grid'] = "none / [] \"a\"" should not set the property value
 Pass	e.style['grid'] = "none / \"a\" []" should not set the property value
 Pass	e.style['grid'] = "none / \"a\" [] 10px" should not set the property value
 Pass	e.style['grid'] = "auto-flow 100px" should not set the property value
-Pass	e.style['grid'] = "auto-flow / auto-flow" should not set the property value
+Fail	e.style['grid'] = "auto-flow / auto-flow" should not set the property value
 Pass	e.style['grid'] = "auto-flow 1fr / auto-flow 1fr" should not set the property value
 Pass	e.style['grid'] = "dense auto-flow / dense auto-flow" should not set the property value
 Pass	e.style['grid'] = "auto / auto-flow foo()" should not set the property value
\ No newline at end of file
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-valid.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-valid.txt
index 89a8b2249a0..1bf04722cb8 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-valid.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-shorthand-valid.txt
@@ -2,10 +2,10 @@ Harness status: OK
 
 Found 49 tests
 
-5 Pass
-44 Fail
-Fail	e.style['grid'] = "none" should set the property value
-Fail	e.style['grid'] = "none / none" should set the property value
+7 Pass
+42 Fail
+Pass	e.style['grid'] = "none" should set the property value
+Pass	e.style['grid'] = "none / none" should set the property value
 Pass	e.style['grid'] = "auto / auto" should set the property value
 Fail	e.style['grid'] = "none / [a] 0px" should set the property value
 Fail	e.style['grid'] = "none / [] 0px" should set the property value
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-invalid.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-invalid.txt
index d3c1c246458..16632b34461 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-invalid.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-invalid.txt
@@ -2,15 +2,15 @@ Harness status: OK
 
 Found 66 tests
 
-19 Pass
-47 Fail
+15 Pass
+51 Fail
 Fail	e.style['grid-template'] = "auto" should not set the property value
 Pass	e.style['grid-template'] = "none none" should not set the property value
 Pass	e.style['grid-template'] = "none []" should not set the property value
 Fail	e.style['grid-template'] = "10px" should not set the property value
 Fail	e.style['grid-template'] = "20%" should not set the property value
 Fail	e.style['grid-template'] = "5fr" should not set the property value
-Pass	e.style['grid-template'] = "[a]" should not set the property value
+Fail	e.style['grid-template'] = "[a]" should not set the property value
 Fail	e.style['grid-template'] = "[a] 10px" should not set the property value
 Fail	e.style['grid-template'] = "[a] repeat(2, 10px)" should not set the property value
 Fail	e.style['grid-template'] = "[a] repeat(auto-fill, 10px)" should not set the property value
@@ -19,7 +19,7 @@ Fail	e.style['grid-template'] = "[a] 10px []" should not set the property value
 Fail	e.style['grid-template'] = "[a] repeat(2, 10px) []" should not set the property value
 Fail	e.style['grid-template'] = "[a] repeat(auto-fill, 10px) []" should not set the property value
 Fail	e.style['grid-template'] = "[a] repeat(auto-fit, 10px) []" should not set the property value
-Pass	e.style['grid-template'] = "[]" should not set the property value
+Fail	e.style['grid-template'] = "[]" should not set the property value
 Fail	e.style['grid-template'] = "10px \"a\"" should not set the property value
 Fail	e.style['grid-template'] = "repeat(2, 10px) \"a\"" should not set the property value
 Fail	e.style['grid-template'] = "repeat(auto-fill, 10px) \"a\"" should not set the property value
@@ -62,9 +62,9 @@ Pass	e.style['grid-template'] = "[a] \"a\" [a] [a]" should not set the property
 Pass	e.style['grid-template'] = "\"a\" \"a\" [a] [a]" should not set the property value
 Pass	e.style['grid-template'] = "\"a\" [a] [a] / none" should not set the property value
 Pass	e.style['grid-template'] = "\"a\" \"a\" [a] [a] / none" should not set the property value
-Pass	e.style['grid-template'] = "none / \"a\"" should not set the property value
+Fail	e.style['grid-template'] = "none / \"a\"" should not set the property value
 Pass	e.style['grid-template'] = "\"a\" / none" should not set the property value
-Pass	e.style['grid-template'] = "none / [] \"a\"" should not set the property value
+Fail	e.style['grid-template'] = "none / [] \"a\"" should not set the property value
 Pass	e.style['grid-template'] = "none / \"a\" []" should not set the property value
 Pass	e.style['grid-template'] = "none / \"a\" [] 10px" should not set the property value
 Pass	e.style['grid-template'] = "none / \"a\" [] repeat(2, 10px)" should not set the property value
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-valid.txt b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-valid.txt
index 74682704772..a19f0668a84 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-valid.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/css-grid/parsing/grid-template-shorthand-valid.txt
@@ -2,10 +2,10 @@ Harness status: OK
 
 Found 40 tests
 
-5 Pass
-35 Fail
-Fail	e.style['grid-template'] = "none" should set the property value
-Fail	e.style['grid-template'] = "none / none" should set the property value
+7 Pass
+33 Fail
+Pass	e.style['grid-template'] = "none" should set the property value
+Pass	e.style['grid-template'] = "none / none" should set the property value
 Pass	e.style['grid-template'] = "auto / auto" should set the property value
 Fail	e.style['grid-template'] = "none / [a] 0px" should set the property value
 Fail	e.style['grid-template'] = "none / [] 0px" should set the property value
diff --git a/Tests/LibWeb/Text/expected/wpt-import/css/cssom/cssom-getPropertyValue-common-checks.txt b/Tests/LibWeb/Text/expected/wpt-import/css/cssom/cssom-getPropertyValue-common-checks.txt
index c92763a34b9..d77de0b684b 100644
--- a/Tests/LibWeb/Text/expected/wpt-import/css/cssom/cssom-getPropertyValue-common-checks.txt
+++ b/Tests/LibWeb/Text/expected/wpt-import/css/cssom/cssom-getPropertyValue-common-checks.txt
@@ -2,10 +2,10 @@ Harness status: OK
 
 Found 11 tests
 
-6 Pass
-5 Fail
+7 Pass
+4 Fail
 Fail	All properties can serialize 'initial'
-Fail	All properties (except 'all') can serialize their initial value (computed)
+Pass	All properties (except 'all') can serialize their initial value (computed)
 Fail	All properties (except 'all') can serialize their initial value (specified)
 Fail	All shorthands can serialize their longhands set to 'initial'
 Fail	All shorthands (except 'all') can serialize their longhands set to their initial value