fixed-position-transform-composited-page-scale.html

<!DOCTYPE html>
<html>
<head>
<style>
::-webkit-scrollbar {
    width: 0px;
    height: 0px;
}
.fixed-no-z-index {
  position: absolute;
  left: 10px;
  transform: translateX(10px) rotate(20deg);
}
.fixed-with-z-index {
  position: fixed;
  z-index: 1;
  left: 10px;
  transform: translateX(10px) rotate(20deg);
}
</style>
<script>
  if (window.internals && window.eventSender) {
    internals.settings.setPreferCompositingToLCDTextEnabled(true);
    internals.setPageScaleFactor(2);
  }
</script>
</head>
<body style="width:2000px;height:2000px;">
<div class="fixed-no-z-index">TEST</div><br>
<div class="fixed-with-z-index">TEST</div>
</body>
</html>

chromium/third_party/blink/web_tests/compositing/geometry/fixed-position-transform-composited-page-scale.html