html,body{
    height:100%;
    margin:0;
    padding:0;
}

body{
    text-align:center;
  	min-width:621px;
    min-height:419px;
}

#vert-hoz{
    position:absolute;
    top:50%;
    left:50%;
    margin-top:-210px;/* half elements height*/
    margin-left:-311px;/* half elements width*/
    width:621px;
    height:419px;
    overflow: hidden;/* allow content to scroll inside element */
    text-align:left;
}