   <style type="text/css">
            div
            {
                font: 20px/1 Ahem;
                height: 1in;
            }
            #reference
            {
                background-color: black;
                width: 120px;
                margin-top: 5px;
            }
            #test
            {
                border-left-style: solid;
                border-left-width: 6em;
            }
        </style>
    </head>
    <body>
        <p>Test passes if the 2 black rectangles have 