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Test Info:

<!DOCTYPE html>
<html class="reftest-wait">
<title>Validates rendering of a transformed element when the element is initially off screen</title>
<link rel="help" href="https://www.w3.org/TR/css-animations-1">
<link rel="match" href="animation-offscreen-to-onscreen-ref.html">
<style type="text/css" media="screen">
body {
margin: 0;
}
@keyframes anim {
from { transform: translate(100px, 0px); }
to { transform: translate(100px, 0px); }
}
#box {
position: absolute;
left: 0px;
top: 100px;
height: 100px;
width: 100px;
margin: 0;
background-color: green;
transform: translate(-2000px, 0px);
animation-duration: 10s;
animation-direction: normal;
animation-timing-function: linear;
animation-name: anim;
}
</style>
<body>
<div id="box"></div>
</body>
<script src="/common/reftest-wait.js"></script>
<script src="support/testcommon.js"></script>
<script type="text/javascript">
window.onload = async () => {
await document.getAnimations()[0].ready;
await waitForNextFrame();
takeScreenshot();
}
</script>
</html>