css/css-masking/clip-path/clip-path-shape-002.html

<!DOCTYPE html>
<html>
<head>
  <title>CSS Masking: Test clip-path property and shape function with evenodd fill</title>
  <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
  <link rel="match" href="reference/clip-path-path-002-ref.html">
  <meta name="assert" content="The clip-path property takes the basic shape
	'shape()' for clipping. Test evenodd path function. On pass you should
	see a green hollow square.">
</head>
<style>
  #rect {
    width: 100px;
    height: 100px;
    background-color: green;
    clip-path: shape(evenodd from 10px 10px,
                     hline by 80px, vline by 80%, hline by -80px, close,
                     move to 25% 25px, hline by 50px, vline by 50px, hline by -50%);
  }
</style>
<body>
  <p>The test passes if there are a green hollow rect.</p>
  <div id="rect"></div>
</body>
</html>