.main {
	position: absolute; 
	top: 0; 
	width: 100%; 
	height: 100%; 
	overflow: visible 
}

.content { 
	position: absolute; 
	left: 50%; 
	width: 300px; 
	margin-left: -150px; 
	height: 615px; 
	top: 50px;
}