diff --git a/Libraries/LibWeb/Painting/PaintableBox.cpp b/Libraries/LibWeb/Painting/PaintableBox.cpp
index 0a5f20b19f1..e1deaf6d3a4 100644
--- a/Libraries/LibWeb/Painting/PaintableBox.cpp
+++ b/Libraries/LibWeb/Painting/PaintableBox.cpp
@@ -1589,7 +1589,8 @@ void PaintableWithLines::resolve_paint_properties()
return max(glyph_height.scaled(0.1), 1);
},
[&](CSS::LengthPercentage const& length_percentage) {
- return length_percentage.resolved(text_node, CSS::Length(1, CSS::Length::Type::Em).to_px(text_node)).to_px(*fragment.m_layout_node);
+ auto resolved_length = length_percentage.resolved(text_node, CSS::Length(1, CSS::Length::Type::Em).to_px(text_node)).to_px(*fragment.m_layout_node);
+ return max(resolved_length, 1);
});
}();
fragment.set_text_decoration_thickness(css_line_thickness);
diff --git a/Tests/LibWeb/Ref/expected/wpt-import/css/css-text-decor/reference/text-decoration-thickness-length-rounding-min-val-ref.html b/Tests/LibWeb/Ref/expected/wpt-import/css/css-text-decor/reference/text-decoration-thickness-length-rounding-min-val-ref.html
new file mode 100644
index 00000000000..88bfbf920d6
--- /dev/null
+++ b/Tests/LibWeb/Ref/expected/wpt-import/css/css-text-decor/reference/text-decoration-thickness-length-rounding-min-val-ref.html
@@ -0,0 +1,158 @@
+
+
+
+
+ CSS Text Decoration Test: text-decoration-thickness length min rounding
+
+
+
+
+
+
+
+
+
+ Test passes if text-decoration-thickness length is rounded up to 1px
+
+
+
+
+
+ |
+ Line Type
+ |
+
+ Line Style
+ |
+
+
+ |
+ Solid
+ |
+
+ Double
+ |
+
+ Dotted
+ |
+
+ Dashed
+ |
+
+ Wavy
+ |
+
+
+
+
+ |
+ Underline
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+ |
+ Line-through
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+ |
+ Overline
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+
+
+
diff --git a/Tests/LibWeb/Ref/input/wpt-import/css/css-text-decor/text-decoration-thickness-length-rounding-min-val.html b/Tests/LibWeb/Ref/input/wpt-import/css/css-text-decor/text-decoration-thickness-length-rounding-min-val.html
new file mode 100644
index 00000000000..10bcfa636ea
--- /dev/null
+++ b/Tests/LibWeb/Ref/input/wpt-import/css/css-text-decor/text-decoration-thickness-length-rounding-min-val.html
@@ -0,0 +1,162 @@
+
+
+
+
+ CSS Text Decoration Test: text-decoration-thickness length min rounding
+
+
+
+
+
+
+
+
+
+
+
+
+
+ Test passes if text-decoration-thickness length is rounded up to 1px
+
+
+
+
+
+ |
+ Line Type
+ |
+
+ Line Style
+ |
+
+
+ |
+ Solid
+ |
+
+ Double
+ |
+
+ Dotted
+ |
+
+ Dashed
+ |
+
+ Wavy
+ |
+
+
+
+
+ |
+ Underline
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+ |
+ Line-through
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+ |
+ Overline
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+ Thickness test.
+ |
+
+
+
+
+