css/css-shadow/css-scoping-shadow-with-rules.html

<!DOCTYPE html>
<html>
<head>
    <title>CSS Scoping Module Level 1 - a selector inside a shadow tree is matched against nodes in the shadow tree</title>
    <link rel="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org"/>
    <link rel="help" href="http://drafts.csswg.org/css-shadow-1/#selectors-data-model">
    <link rel="match" href="reference/green-box.html"/>
</head>
<body>
    <style>
    my-host {
        display: block;
        width: 100px;
        height: 100px;
    }
    div {
        width: 100%; height: 100%; background: red;
    }
    </style>
    <p>Test passes if you see a single 100px by 100px green box below.</p>
    <my-host>
        <div>FAIL</div>
    </my-host>
    <script>

    try {
        var shadowHost = document.querySelector('my-host');
        shadowRoot = shadowHost.attachShadow({mode: 'open'});
        shadowRoot.innerHTML = '<div>FAIL</div><style> div {width: 100px; height: 100px; background: green; color:green; } </style>';
    } catch (exception) {
        document.body.appendChild(document.createTextNode(exception));
    }

    </script>
</body>
</html>