<!DOCTYPE html> <!-- webkit-test-runner [ AsyncOverflowScrollingEnabled=true ] -->
<style>
  :first-of-type {
    writing-mode: tb-rl;
  }
  * {
    inline-size: 0;
  }
  :last-of-type {
    border-top-left-radius: 1px;
  }
  :first-child {
    border-image: url();
  }
  :nth-child(3) {
    transform: rotateX(0deg);
  }
  :last-child {
    overflow-y: scroll;
    padding: 0 0 0 1px;
  }
</style>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();
  onload = () => {
    document.body.appendChild(document.createElement('div'));
    
    setTimeout(() => {
        document.body.appendChild(document.createElement('div'));
        document.body.appendChild(document.createElement('form'));
        document.body.offsetTop;
        document.designMode = 'on';
        document.body.appendChild(document.createElement('div'));
        document.body.offsetTop;
        document.designMode = 'off';
    }, 0);
  };
</script>
<body>Test passes if it does not crash.</body>