<html class="reftest-wait">
<style>
:not(feFuncB) {
  position: fixed;
}
a:last-child {
  -webkit-transform-style: preserve-3d;
}
* {
  -webkit-backface-visibility: hidden;
</style>
<script>
window.requestIdleCallback(function() {
  document.documentElement.getBoundingClientRect();
});
function go() {
  var c = document.createElement("a")
  c.text = "-";
  try { c.replaceChild(b, c.childNodes[0]); } catch(e) { }
  try { document.body.appendChild(c); } catch(e) { }
  document.documentElement.className = "";
}
</script>
<body onload=go()>
<d id="b">|
<audio controls="">
</html>