servo/tests/wpt/css-tests/compositing-1_dev/html/mix-blend-mode-overflowing-child.htm

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<!DOCTYPE html>
<html><head>
<title>CSS Test: blended element overflows parent</title>
<link href="mailto:mitica@adobe.com" rel="author" title="Mihai Tica">
<link href="mailto:mibalan@adobe.com" rel="reviewer" title="Mihai Balan">
<link href="mailto:olaru@adobe.com" rel="reviewer" title="Horia Olaru">
<link href="https://drafts.fxtf.org/compositing-1/#mix-blend-mode" rel="help">
<meta content="Test checks that an overflowing element with mix-blend-mode blends with the parent element." name="assert">
<meta content="" name="flags">
<link href="reference/mix-blend-mode-overflowing-child-ref.htm" rel="match">
<style type="text/css">
body {
background: lightgray;
}
.container {
position: absolute;
z-index: 1;
width: 100px;
height: 100px;
background: #0F0;
}
.blender {
background: #0F0;
margin: 50px;
width: 100px;
height: 100px;
mix-blend-mode: difference;
}
</style>
</head>
<body>
<p>Test passes if you can see two green squares and a black square as their intersection,<br>
drawn over a light gray background.</p>
<div class="container">
<div class="blender"></div>
</div>
</body></html>