-top: blue solid 5px;
            }
            #div2
            {
                border-top: orange solid 5px;
                top: 0em;
            }
        </style>
    </head>
    <body>
        <p>Test passes if there is <strong>no space between</strong> the blue and orange lines.</p>
        <div id="div1">
            <div id="div2"></div>
        </div>
    </body>
</html>