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Test Info:

<!DOCTYPE html>
<meta charset="utf-8">
<title>Forced colors mode - alpha channel.
Tests that the alpha channel for background colors are preserved in forced
colors mode at the root node.
</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
body {
background-color: rgba(114, 173, 218, .3);
}
div {
background-color: Canvas;
}
</style>
<body id="body">
<div id="div">
Background colors should maintain their alpha channels in forced
colors mode.
</div>
</body>
<script>
var div_color = getComputedStyle(div).backgroundColor;
var expected_div_color = div_color.replace(')', ', 0.3)').replace('rgb(', 'rgba(');
test(function(){
assert_equals(getComputedStyle(body).backgroundColor, expected_div_color);
}, "Checks that background color alpha channels are preserved in forced colors mode at the root node.");
</script>