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firefox/testing/web-platform/tests/css/css-transforms/backface-visibility-hidden-003.html
Daniel Baumann 5e9a113729
Adding upstream version 140.0.
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
2025-06-25 09:37:52 +02:00

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HTML

<!DOCTYPE html>
<title>backface visibility: hidden creates containing block and stacking context when participating in a 3D rendering context</title>
<link rel="author" title="Matt Woodrow" href="mailto:mattwoodrow@apple.com">
<link rel="help" href="http://www.w3.org/TR/css-transforms-1/#transform-property">
<link rel="help" href="http://www.w3.org/TR/css-transforms-2/#propdef-backface-visibility">
<link rel="match" href="backface-visibility-hidden-003-ref.html">
<p>The test passes if there is a green rectangle and no red.</p>
<style>
.outer {
transform-style: preserve-3d;
width: 100px;
height: 100px;
background-color: red;
}
.inner {
backface-visibility: hidden;
}
.positioned {
position: absolute;
top: -100px;
z-index: -1;
width: 100px;
height: 100px;
background-color: green;
}
.sibling {
width: 100px;
height: 100px;
background-color: blue;
}
</style>
<div class="outer">
<div class="sibling"></div>
<div class="inner">
<div class="positioned"></div>
</div>
</div>