css/CSS2/box-display/containing-block-028.xht

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<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <title>CSS Test: Principal block box establishes the containing block</title>
        <link rel="author" title="Microsoft" href="http://www.microsoft.com/" />
        <link rel="reviewer" title="Gérard Talbot" href="http://www.gtalbot.org/BrowserBugsSection/css21testsuite/" /> <!-- 2012-03-11 -->
        <link rel="help" href="http://www.w3.org/TR/CSS21/visuren.html#block-boxes" />
        <link rel="match" href="containing-block-028-ref.xht" />

        <meta name="flags" content="" />
        <meta name="assert" content="Principal block boxes establish a containing block for descendant boxes." />
        <style type="text/css">
            div
            {
                background: blue;
                height: 1in;
                position: absolute;
                width: 1in;
            }
            div div
            {
                background: orange;
                bottom: 0;
                height: 0.25in;
                right: 0;
                width: 0.25in;
            }
        </style>
    </head>
    <body>
        <p>Test passes if a small orange square is in the bottom right corner of the blue square.</p>
        <div>
            <div></div>
        </div>
    </body>
</html>