testing/web-platform/tests/css/filter-effects/css-filters-animation-invert-ref.html


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<!DOCTYPE html>
<html>
<head>
    <title>CSS Filters Animation: Invert Reference</title>
    <link rel="author" title="Gunther Brunner" href="mailto:takeshimiya@gmail.com">
    <link rel="reviewer" title="Dirk Schulze" href="mailto:dschulze@adobe.com">
    <link rel="reviewer" title="Rebecca Hauck" href="mailto:rhauck@adobe.com">
    <style type="text/css">
        .square {
            width: 100px;
            height: 100px;
            background: black;
            filter: invert(50%);
        }
    </style>
</head>
<body>
<p>You should see a gray rectangle. Neither black nor white.</p>
<div class="square"></div>
</body>
</html>