#wrapper{ margin-top:auto; position:absolute; left:20%; right:19%; width:800px; height:600px; text-align:center; } #back{ top:575px; position:absolute; left:349px; width:100px; height:30px; text-align:center; padding:0px; border:0; border-color:0; border-width:0px; z-index:1; }