#box_main_atas{
	width: 100%;
	height: 70px;
	background: #171c23;
	position: relative;
	margin: 0px;
}
#box_main_atas:before{
	position: absolute;
	content: "";
	bottom: 0px;
	background: #171c23;
	width: 100%;
	height: 10px;
	left:0px;
	box-shadow: 0px 1px 3px #719ee8;
}
#box_main_tengah{
	position: absolute;
	top:0px;
	width: 100%;
	height:100%;
	display:table;
	vertical-align: middle;
	overflow: hidden;
}