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<html><head>        <title></title>        <style type="text/css">                body {                        background-color: black;                }                #wrapper {                        width: 504px;                        height: 304px;                        margin: 200px auto 0px auto;                        text-align: center;                }                .half {                        width: 250px;                        height: 302px;                        background-color: gray;                        color: white;                        border: 1px solid black;                        float: left;                }                * {margin: 0px; padding: 0px; }        </style></head><body>        <div id="wrapper">                <div class="half">                        Hello World                </div>                <div class="half">                </div>        </div></body></html>