html, body {
	margin:0px; 
	padding: 0px; 
	height: 100%;
	width: 100%;
	background: #dddddd;
}

td{
	width: 100%;
	height: 100%;
	vertical-align: middle;
	text-align: center;
}
table{
	width: 100%;
	height: 100%;
}