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Test Info:
<!DOCTYPE html>
<html class="reftest-wait">
<style>
@keyframes anim {
from { background-color: rgb(255, 255, 255); }
to { background-color: rgb(255, 255, 255); }
}
#target::before {
content: 'initial';
background-color: rgb(0, 0, 0);
height: 100px;
width: 100px;
position: absolute;
}
#target.hover::before{
content: '';
animation: anim 100s steps(1, start);
}
</style>
<div id="target"></div>
<script>
window.addEventListener("load", () => {
target.className = 'hover';
target.addEventListener('animationstart', () => {
document.documentElement.classList.remove('reftest-wait');
});
});
</script>
</html>