css/css-sizing/aspect-ratio/abspos-020.html

<!DOCTYPE html>
<title>CSS aspect-ratio: abspos div inline size with auto inline insets with vertical writing mode</title>
<link rel="author" title="Mozilla" href="https://www.mozilla.org/">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
<link rel="match" href="../../reference/ref-filled-green-100px-square.xht">

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

<div style="width: 500px; height: 200px; position: relative;">
  <div style="background: green; aspect-ratio: 1/1; width: 100px; position: absolute; left: 0; right: 0; top: 0; writing-mode: vertical-rl;"></div>
</div>