dth: 50px;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is a blue 'L' with a light blue dot in its upper-left corner (and no other blue dots) below.</p>
        <table>
            <col id="blue" />
            <col />
            <col />
                <tr>
                    <td></td>
                    <td></td>
                    <td></td>
                </tr>
                <tr>
                    <td></td>
                    <td></td>
                  