mask-size-contain-clip-padding.html

<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <title>CSS Masking: mask-size: mask layer size</title>
    <link rel="author" title="Astley Chen" 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-size">
    <link rel="match" href="mask-size-contain-clip-padding-ref.html">
    <meta name="assert" content="Test checks whether sizing mask layer works correctly or not.">
    <style type="text/css">
      #outer {
        border: 1px solid black;
        width: 64px;
        height: 128px;
      }

      #inner {
        background-color: purple;
        border: 20px solid transparent;
        width: 24px;
        height: 88px;
        mask-image: url(support/50x50-opaque-blue.svg);
        mask-repeat: no-repeat;
        mask-position: left top;
        mask-clip: padding-box;
        mask-origin: padding-box;
        mask-size: contain;
      }
    </style>
  </head>
  <body>
    <div id="outer"><div id="inner"></div></div>
  </body>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-masking/mask-image/mask-size-contain-clip-padding.html