testing/web-platform/tests/css/css-masking/mask-image/mask-image-1a.html


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<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Masking: mask-image: mask layer image</title>
    <link rel="author" title="Astley Chen" href="mailto:aschen@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-1-ref.html">
    <meta name="assert" content="Test checks whether image as mask layer works correctly or not.">
    <style type="text/css">
      div {
        background-color: purple;
        width: 100px;
        height: 100px;
      }

      div.mask-by-png {
        mask-image: url(support/transparent-100x50-blue-100x50.png);
      }
    </style>
  </head>
  <body>
    <div class="mask-by-png"></div>
  </body>
</html>