<!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:[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 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>