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Test Info:

<!doctype html>
<html class="test-wait">
<title>CSS Animations Test: Chrome crash when removing documentElement and @keyframes stylesheet</title>
<link rel="help" href="https://crbug.com/999522">
<style>
@keyframes anim {
from { color: pink }
to { color: purple }
}
div {
animation: notfound 1s;
}
</style>
<div></div>
<script>
window.addEventListener('load', () => {
document.body.offsetTop;
document.querySelector("style").remove();
// We need the root later to remove the test-wait class.
const root = document.documentElement;
document.documentElement.remove();
// rAF to make sure that style runs.
requestAnimationFrame(() => {
root.classList.remove('test-wait');
});
});
</script>