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<!doctype html>
<title>Container Relative Units: Animation</title>
<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
#container {
container-type: size;
width: 200px;
height: 200px;
}
@keyframes anim_cqw { from { top: 20cqw; } to { top: 40cqw; } }
@keyframes anim_cqh { from { top: 20cqh; } to { top: 40cqh; } }
@keyframes anim_cqi { from { top: 20cqi; } to { top: 40cqi; } }
@keyframes anim_cqb { from { top: 20cqb; } to { top: 40cqb; } }
@keyframes anim_cqmin { from { top: 20cqmin; } to { top: 40cqmin; } }
@keyframes anim_cqmax { from { top: 20cqmax; } to { top: 40cqmax; } }
#container > div {
animation-delay: -5s;
animation-play-state: paused;
animation-duration: 10s;
animation-timing-function: linear;
}
#element_cqw { animation-name: anim_cqw; }
#element_cqh { animation-name: anim_cqh; }
#element_cqi { animation-name: anim_cqi; }
#element_cqb { animation-name: anim_cqb; }
#element_cqmin { animation-name: anim_cqmin; }
#element_cqmax { animation-name: anim_cqmax; }
</style>
<div id=container>
<div id=element_cqw></div>
<div id=element_cqh></div>
<div id=element_cqi></div>
<div id=element_cqb></div>
<div id=element_cqmin></div>
<div id=element_cqmax></div>
</div>
<script>
setup(() => assert_implements_container_queries());
const units = ['cqw', 'cqh', 'cqi', 'cqb', 'cqmin', 'cqmax'];
for (let unit of units) {
test(() => {
let element = document.getElementById(`element_${unit}`)
assert_equals(getComputedStyle(element).top, '60px');
}, `Animation using ${unit} unit`);
test(() => {
let element = document.getElementById(`element_${unit}`)
assert_equals(getComputedStyle(element).top, '60px');
try {
container.style.width = '300px';
container.style.height = '300px';
assert_equals(getComputedStyle(element).top, '90px');
} finally {
container.style = '';
}
assert_equals(getComputedStyle(element).top, '60px');
}, `Animation using ${unit} unit responds to changing container size`);
}
</script>
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