lor: red;
                vertical-align: 0em;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is at least one black box and there is no red visible on the page.</p>
        <div id="div1">
            <div id="div2">
                <span id="span1">X</span>
            </div>
            <div id="div3">X</div>
        </div>
    </body>
</html>