<div style="height:100%,margin-top:0;margin-bottom:0;width:800px;margin-left:auto;margin-right:auto; background-color:#999999">
<div>Content one or header</div>
<div>Content two</div>
<div>
       <div style="float:left;width:600px;height:300px;">Float Left</div>
        <div style="float:right;width:190px;height:300px;">Float Right</div>
</div>
<div>Footer</div>
</div>