opacity-change-parent-stacking-context.html

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This WPT test may be referenced by the following Test IDs:
- /css/CSS2/stacking-context/opacity-change-parent-stacking-context.html - WPT Dashboard Interop Dashboard

<!doctype HTML>

<html class="reftest-wait">

  <title>CSS Test: Test for re-paint after stacking context removal due to opacity</title>

  <link rel="author" title="Chris Harrelson" href="mailto:chrishtr@chromium.org" />

  <link rel="help" href="https://www.w3.org/TR/CSS2/zindex.html">

  <link rel="match" href="opacity-change-parent-stacking-context-ref.html">

  <script src="/common/reftest-wait.js"></script>

  <div style="width: 100px; height: 100px; background: lightblue; will-change: transform; position: absolute">

    <div id=target style="opacity: 0; backface-visibility: hidden">

      <div style="width: 50px; height: 50px; background: lightgray; top: 75px; position: relative"></div>

    </div>

  </div>

  <script>

    onload = function() {

      requestAnimationFrame(() => requestAnimationFrame(() => {

        target.style.opacity = 1;

        takeScreenshot();

      }));

  </script>

</html>