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<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>CSS Masking: mask-mode with raster image</title>
<link rel="author" title="CJ Ku" href="mailto:cku@mozilla.com">
<link rel="author" title="Mozilla" href="https://www.mozilla.org">
<link rel="help" href="https://www.w3.org/TR/css-masking-1/#propdef-mask-mode">
<link rel="match" href="mask-mode-ref.html">
<meta name="assert" content="Test checks that whether mask-mode is filled automatically according to the number of mask layers.">
<meta name="fuzzy" content="maxDifference=0-1;totalPixels=0-10000">
<style type="text/css">
div {
background-color: blue;
position: absolute;
margin: 0px;
padding: 0px;
width: 100px;
height: 100px;
top: 10px;
}
div.auto {
left: 10px;
mask-mode: match-source;
mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
}
div.alpha {
left: 120px;
mask-mode: alpha alpha;
mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
}
div.luminance1 {
left: 230px;
mask-mode: luminance;
mask-image: linear-gradient(black 0%, black 100%), linear-gradient(blue 0%, blue 100%);
}
div.luminance2 {
left: 340px;
mask-mode: luminance;
mask-image: linear-gradient(black 0%, black 100%), linear-gradient(red 0%, red 100%);
}
div.luminance3 {
left: 450px;
mask-mode: luminance;
mask-image: linear-gradient(black 0%, black 100%), linear-gradient(lime 0%, lime 100%);
}
</style>
</head>
<body>
<div class="auto"></div>
<div class="alpha"></div>
<div class="luminance1"></div>
<div class="luminance2"></div>
<div class="luminance3"></div>
</body>
</html>
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