css/css-masking/clip-path/clip-path-shape-003.html

<!DOCTYPE html>
<html>
<head>
  <title>CSS Masking: Test clip-path property and shape function with nonzero fill</title>
  <link rel="help" href="https://drafts.csswg.org/css-shapes-2/#funcdef-shape">
  <link rel="match" href="reference/clip-path-shape-003-ref.html">
  <meta name="assert" content="The clip-path property takes the basic shape
	'shape()' for clipping. Test curves.">
</head>
<style>
  div {
    width: 100px;
    height: 100px;
  }
  #ref {
    clip-path: path(nonzero, "M 10 10, Q 40 0 60 20, T 90 0, c 10 40 20 20 -20 60, s -10 70 -40 -10");
    background-color: red;
    position: absolute;
  }
  #rect {
    width: 100px;
    height: 100px;
    background-color: green;
    clip-path: shape(nonzero from 10px 10px,
                     curve to 60px 20% via 40px 0,
                     smooth to 90px 0,
                     curve by -20px 60% via 10% 40px 20% 20px,
                     smooth by -40% -10px via -10px 70px);
  }
</style>
<body>
  <p>You should see no red.</p>
  <div id="ref"></div>
  <div id="rect"></div>
</body>
</html>