<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Masking: mask-image: mask layer image</title>
<link rel="author" title="CJ Ku" 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-image">
<link rel="match" href="mask-image-1-ref.html">
<meta name="assert" content="Test checks whether treat unresolvable mask as no-mask for a SVG element embedded in HTML document.">
</head>
<body>
<svg width="100" height="100">
<rect x="0" y="0" width="100" height="50" fill="purple" mask="url(#foo)"/>
</svg>
</body>
</html>