invalidate-opacity-negative-z-index.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-position/invalidate-opacity-negative-z-index.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html class="reftest-wait">

  <link rel="help" href="https://www.w3.org/TR/CSS2/visuren.html#propdef-z-index">

  <link rel="help" href="https://www.w3.org/TR/compositing-1/">

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

  <link rel="match" href="invalidate-opacity-negative-z-index-ref.html">

  <div style="position: relative; will-change: transform; z-index: -1"></div>

  <div id="target"

       style="width: 50px; height: 50px; background: blue; opacity: 0.2"></div>

  <script>

    onload = () => {

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

          target.style.opacity = 0.99;

          document.documentElement.className = "";

      }));

};

  </script>

</html>