chromium/third_party/blink/web_tests/external/wpt/css/css-sizing/aspect-ratio/flex-aspect-ratio-012.html

<!DOCTYPE html>
<title>CSS aspect-ratio: Row flexbox cross size</title>
<link rel="author" title="Google LLC" href="https://www.google.com/">
<link rel="help" href="https://drafts.csswg.org/css-sizing-4/#aspect-ratio">
<link rel="help" href="https://drafts.csswg.org/css-flexbox/#line-sizing" title="9.2.3.B">
<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="display: flex; width: 100px;">
  <div style="background: green; aspect-ratio: 1/1; min-width: 0; flex: 1 1 50px;"></div>
</div>