<style>
  body::-webkit-scrollbar {
    background-image: conic-gradient(red, green);
    width: 200px;
  }
</style>
<script>
  onload = () => {
    if (window.testRunner) {
      testRunner.dumpAsText();
      testRunner.waitUntilDone();
    }
    document.body.offsetTop;
    document.styleSheets[0].insertRule(`div { aspect-ratio: 1; }`);
    document.body.offsetTop;
    document.documentElement.remove();
    setTimeout(function() { document.write('This test should not crash.'); testRunner.notifyDone(); }, 50);
  };
</script>
<body>
<div></div>
</body>