vendor-imports/mozilla/mozilla-central-reftests/masking/mask-image-3d.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Masking: mask-image: interleave SVG mask with image mask </title>
    <link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
    <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-image-3-ref.html">
    <meta name="assert" content="Test checks whether SVG mask and image as mask layer works correctly or not.">
    <svg height="0">
      <mask id="mask1" x="10%" y="10%" width="80" height="80" >
        <circle cx="50" cy="50" r="25" style="stroke:none; fill: #ffffff"/>
      </mask>
    </svg>
    <style type="text/css">
      div {
        background-color: purple;
        mask: url(#mask1), url(support/50x50-opaque-blue.svg);
        mask-repeat: no-repeat, no-repeat;
        width: 100px;
        height: 100px;
      }
    </style>

  </head>

  <body>
    <div></div>
  </body>
</html>