chromium/third_party/blink/web_tests/external/wpt/css/css-masking/mask-image/mask-opacity-1e.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Masking: mask-image: mask with opacity</title>
    <link rel="author" title="CJ Ku" href="mailto:[email protected]">
    <link rel="author" title="Mozilla" href="https://www.mozilla.org">
    <link rel="help" href="https://www.w3.org/TR/css-masking-1/#the-mask-image">
    <link rel="match" href="mask-opacity-1-ref.html">
    <meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
    <style type="text/css">
      #outter {
        position: absolute;
        left: 10px;
        top: 10px;
        width: 100px;
        height: 100px;
        mask-image: url(support/blue-100x50-transparent-100x50.png),
                    url(support/blue-100x50-transparent-100x50.png);
        opacity: 0.5;
      }

      #inner {
        width: 100px;
        height: 100px;
        box-sizing:border-box;
        background-color: blue;
        border: 1px solid transparent;
        will-change: transform;
      }
    </style>
  </head>
  <body>
    <div id="outter"><div id="inner"></div></div>
  </body>
</html>