        outline: solid green;
                outline-width: 1px;
                width: 300px;
            }
        </style>
    </head>
    <body>
        <p>Test passes if the boxes below are the same size.</p>
        <div id="test">Filler Text</div>
        <div id="reference">Filler Text</div>
    </body>
</html>