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Test Info:

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Masking: mask-image: filter with opacity</title>
<link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="match" href="mask-opacity-1-ref.html">
<meta name="assert" content="Test checks whether apply opacity to masked element correctly or not.">
<meta name="fuzzy" content="maxDifference=1; totalPixels=0-5000">
<style type="text/css">
div {
position: absolute;
left: 10px;
top: 60px;
background-color: rgb(255,255,0);
width: 100px;
height: 50px;
filter: invert(100%);
opacity: 0.5;
}
</style>
</head>
<body>
<div></div>
</body>
</html>