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<!DOCTYPE html>
<title>CSS Cascade Layers: 'revert-layer' from animation origin to author origin on custom property</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#revert-layer">
<link rel="author" href="mailto:xiaochengh@chromium.org">
<link rel="match" href="reference/ref-filled-green-100px-square.xht">
<style>
#target {
width: var(--x);
--x: 150px;
height: 100px;
background-color: green;
animation: anim linear 2s -1s paused;
}
@property --x {
syntax: '<length>';
initial-value: 0px;
inherits: false;
}
@keyframes anim {
from { --x: 50px; }
to { --x: revert-layer; }
}
</style>
<p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
<div id="target"></div>
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