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<!DOCTYPE html>
<html class="reftest-wait">
<head>
<link rel="help" src="https://github.com/w3c/csswg-drafts/issues/7759">
<link rel="match" href="custom-property-ref.html">
<script src="/web-animations/testcommon.js"></script>
<script src="/common/reftest-wait.js"></script>
<style>
html {
overflow: hidden;
}
.spacer {
height: 300vh;
}
.box {
position: fixed;
left: 0;
top: 0;
width: 100px;
height: 100px;
background: black;
border: solid red;
animation: move auto linear;
animation-timeline: scroll();
}
@keyframes move {
to {
translate: var(--adjustment);
}
}
</style>
</head>
<body>
<div class="box"></div>
<div class='spacer'></div>
</body>
<script>
scroller = document.scrollingElement;
scroller.scrollTop
= scroller.scrollHeight - scroller.clientHeight;
document.documentElement.style.setProperty(
'--adjustment', `100px`);
waitForCompositorReady().then(takeScreenshot);
</script>
</html>
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