LayoutTests/webanimations/accelerated-animation-slot-invalidation-expected.html

<style>
div {
    background-color: rebeccapurple;
    width: 100px;
    height: 100px;
}

#test{
    position: absolute;
    top: 200px;
    left: 200px;
}

</style>
<div id=test></div>