css/css-color/clip-opacity-out-of-flow.html

<!DOCTYPE html>
<link rel="help" href="https://drafts.csswg.org/css-color/#transparency">
<link rel="help" href="https://drafts.csswg.org/css-position/#def-cb">
<link rel="match" href="clip-opacity-out-of-flow-ref.html">
<meta name="fuzzy" content="maxDifference=0-1;totalPixels=0-60000">
<div style="overflow: hidden; width: 250px; height: 250px; will-change:transform">
  <div style="overflow: hidden; width: 300px; height: 300px; transform: translateX(0)">
    <div style="overflow: hidden; width: 200px; height: 200px">
      <div style="width: 300px; height: 300px; background: red; opacity: 0.5">
        <div style="width: 400px; height: 400px; background: yellow">
        <!-- These out-of-flow positioned elements are not contained by the inner clip,
             while the outer clip and the opacity still apply. The opacity should also
             apply to all descendants as a single group. -->
        <div style="position: absolute; width: 400px; height: 100px; background: blue"></div>
        <div style="position: fixed; width: 100px; height: 400px; background: green"></div>
      </div>
    </div>
  </div>
</div>