html, body
{
    height: 100%;
    margin:0;
    padding:0;
	background: #776d68;
}

div.centered 
{
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -150px;
    margin-left: -150px;
    width: 300px;
    height: 300px;
	
}​