chromium/third_party/blink/web_tests/external/wpt/css/css-flexbox/percentage-padding-003.html

<!DOCTYPE html>
<link rel="author" title="David Grogan" href="mailto:[email protected]">
<link rel="help" href="https://crbug.com/1440908">
<link rel="match" href="../reference/ref-filled-green-100px-square.xht">
<meta name="assert"
  content="vertical-rl block's auto height should encompass its children, and the percentage padding should resolve based on that." />

<style>
  #reference-overlapped-red {
    position: absolute;
    background-color: red;
    width: 100px;
    height: 100px;
    z-index: -1;
  }

</style>

<p>Test passes if there is a filled green square and <strong>no red</strong>.
</p>

<div id=reference-overlapped-red></div>

<div id="container" style="writing-mode:vertical-rl; width:101px;">
  <div style="display:flex; padding-right:5%;">
    <div style="writing-mode:horizontal-tb; padding-right:10%;">
      <div
        style="width:100px; height:100px; background:green; position:relative; left:15px;">
      </div>
    </div>
  </div>
</div>
<script>
  document.body.offsetTop;
  container.style.width = "100px";
</script>