body {
	margin: 0px
}
.parent {
	text-align: center;
	position: absolute;
	top: 50%;
	left: 0px;
	width: 100%;
	overflow: visible;
	visibility: visible;
	display: block;
}

.content {
	margin-left: -260px;
	position: absolute;
	top: -180px;
	left: 50%;
	width: 520px;
	height: 360px;
	visibility: visible;
}