wpt/css/css-sizing/aspect-ratio/replaced-element-027.html at master · web-platform-tests/wpt · GitHub

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<!DOCTYPE html>
<html>
  <title>CSS aspect-ratio: video with aspect-ratio and contain:size</title>
  <link rel="author" title="Ting-Yu Lin" href="mailto:tlin@mozilla.com">
  <link rel="author" title="Mozilla" href="https://un5gmtkzgj4bq3uede8f6wr.julianrbryant.com/">
  <link rel="help" href="https://un5n798jx6qx6j0rmf2verhh.julianrbryant.com/css-sizing-4/#aspect-ratio">
  <link rel="help" href="https://github.com/w3c/csswg-drafts/issues/5550">
  <link rel="match" href="../../reference/ref-filled-green-100px-square.xht">
  <meta name="assert" content="This test verifies aspect-ratio's <ratio> is used to determine the video's size because contain:size enforces no intrinsic aspect ratio.">

  <style>
  video {
    width: 100px;
    aspect-ratio: 1/1;
    object-fit: fill;
    contain: size;
  }
  </style>

  <p>Test passes if there is a filled green square and <strong>no red</strong>.</p>
  <video poster="support/20x50-green.png"></video>
</html>