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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Animations: animation should be canceled when a parent details element is closed</title>
<link rel="help" href="https://drafts.csswg.org/css-animations/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/testcommon.js"></script>
<style>
@keyframes anim {
to { margin-left: 100px }
}
</style>
<div id="log"></div>
<script>
promise_test(async t => {
// create a <div> contained within a <details> element
const details = addElement(t, "details", { "open": "open" });
const div = addDiv(t);
details.appendChild(div);
// start an animation on the <div>
div.style.animation = 'anim 1s';
const animation = div.getAnimations()[0];
await animation.ready;
// ensure the animation running on the <div> is canceled as a result of closing the <details>
const canceled = new Promise(resolve => animation.addEventListener("cancel", resolve));
details.removeAttribute("open");
await canceled;
}, 'A CSS Animation running on an element within a <details> element is canceled after the <details> element is closed.');
</script>
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