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Test Info:
<!--
Any copyright is dedicated to the Public Domain.
-->
<!DOCTYPE html>
<html>
<head>
<title>CSS Filters: Darken an HTML Element Using the Brightness Function and a Factor of Zero</title>
<link rel="author" title="Max Vujovic" href="mailto:mvujovic@adobe.com">
<link rel="match" href="brightness-zero-ref.html">
<meta name="assert"
content="Given a factor of zero, the CSS brightness filter function
should change the color of an HTML element to black.">
<style type="text/css">
#target {
filter: brightness(0);
background-color: #f00;
width: 100px;
height: 100px;
}
</style>
</head>
<body>
<p>You should see a black square.</p>
<div id="target"></div>
</body>
</html>