<!DOCTYPE HTML>
<html class="reftest-wait">
<title>Animation on element which is partially out of the view</title>
<style>

@keyframes background-color {
  0% { background-color: black }
  1% { background-color: blue }
  100% { background-color: blue }
}

div {
  position: absolute;
  width: 200px;
  height: 200px;
  background-color: black;
  animation: background-color 0.1s 1 forwards;
  top: -100px;
}

</style>
<div id="target"></div>
<script>

document.getElementById("target").addEventListener("animationend", AnimationEndListener, false);

function AnimationEndListener(event) {
  setTimeout(RemoveReftestWait, 0);
}

function RemoveReftestWait() {
  document.documentElement.classList.remove("reftest-wait");
}

</script>