em;
            }
            .tr
            {
                display: table-row;
            }
            .td
            {
                background: black;
                display: table-cell;
                font: 1em Ahem;
                overflow: hidden;
                padding: 0;
            }
            #reference
            {
                background: blue;
                height: 2em;
                width: 10em;
            }
        </style>
    </head>
    <body>
        <p>Test passe