<!DOCTYPE html>

<html>
<head>
    <style>
        body {
            font-size: 18pt;
        }
        
        .filtered {
            -webkit-filter: blur(10px);
        }
        
        div {
            display: inline-block;
            width: 20px;
            height: 1em;
            background: green;
        }
    </style>
    <script>
        if (window.testRunner)
            testRunner.dumpAsText(true);
    </script>
</head>
<body>
    <div></div><div></div><span class="filtered"><div></div><div></div></span><div></div><div>
</body>
</html>