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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS mask-composite reference</title>
<link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
<style type="text/css">
div {
position: absolute;
margin: 0px;
padding: 0px;
width: 100px;
height: 100px;
top: 10px;
}
div.add {
left: 10px;
background-color: blue;
}
div.subtract {
left: 120px;
background-image: url(support/blue-100x50-transparent-100x50.svg);
}
div.exclude {
left: 340px;
background-color: blue;
}
</style>
</head>
<body>
<div class="add"></div>
<div class="subtract"></div>
<div class="exclude"></div>
</body>
</html>