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WebKit export of https://bugs.webkit.org/show_bug.cgi?id=309916 #58506

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Merged
tuankiet65 merged 1 commit into from
Mar 16, 2026
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WebKit export of https://bugs.webkit.org/show_bug.cgi?id=309916 #58506

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5 changes: 5 additions & 0 deletions ...ark-color-scheme/color-scheme-iframe-background-mismatch-opaque-cross-origin-003-ref.html
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<!doctype html>
<style>
html { color-scheme: dark; }
</style>
<p>You should not see any white boxes.</p>
25 changes: 25 additions & 0 deletions ...ark-color-scheme/color-scheme-iframe-background-mismatch-opaque-cross-origin-003.sub.html
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<!doctype html>

<title>CSS Color Adjustment Test: Cross-origin frame with light color-scheme should not get opaque background when embedding element is also light, even though the parent document is dark</title>
<link rel="author" title="Kiet Ho" href="mailto:kiet.ho@apple.com">
<link rel="help" href="https://drafts.csswg.org/css-color-adjust/#color-scheme-effect">
<link rel="match" href="color-scheme-iframe-background-mismatch-opaque-cross-origin-003-ref.html">

<style>
html {
color-scheme: dark;
}

iframe {
margin: 0;
border: 0;
padding: 0;
width: 200px;
height: 200px;
display: block;
color-scheme: light;
}
</style>

<p>You should not see any white boxes.</p>
<iframe src="http://{{hosts[alt][]}}:{{ports[http][0]}}/css/css-color-adjust/rendering/dark-color-scheme/support/light-frame-empty.html"></iframe>
4 changes: 4 additions & 0 deletions css/css-color-adjust/rendering/dark-color-scheme/support/light-frame-empty.html
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Original file line number Diff line number Diff line change
@@ -0,0 +1,4 @@
<!doctype html>
<style>
:root { color-scheme: light }
</style>
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