chromium/third_party/blink/web_tests/external/wpt/html/semantics/scripting-1/the-template-element/additions-to-the-css-user-agent-style-sheet/css-user-agent-style-sheet-test-003.html

<!DOCTYPE html>
    <title>HTML Templates: template content is invisible by default</title>
    <link rel="author" title="Sergey G. Grekhov" href="mailto:[email protected]">
    <link rel="help" href="http://www.w3.org/TR/2013/WD-html-templates-20130214/#css-additions">
    <meta name="assert" content="The template element itself must be hidden by default">
    <link rel="match" href="css-user-agent-style-sheet-test-001-ref.html">
    <style>
        template {
            border: 1px solid;
            width: 100px;
            height: 100px;
        }
    </style>
<body>
    <p>Test passes if there's no anything below this line.</p>
    <template>
        <span style="color:red">Test fails if you can see this text or border around it</span>
    </template>
</body>