.rollBanner div{height:480px; text-align:center;}
.mainPage {
    height: auto !important;
    margin: 16px 0 20px 0;
}
#row_1{background:#F6F9FF; padding-bottom:40px; position:relative}
#row_4{margin:0 -15px 40px !important; text-align:center;background:url('/asset/images/main/grade5/grade5_row5bg-299eaac6daf0a025fa3752634d9151e6.png')}
@media (max-width:1200px) {
.rollBanner div{height:auto;}
.rollBanner div img{width:100%;}
#row_6 .col-md-12{margin-bottom:20px;}
}
@media (min-width:768px) {
	
}
@media (max-width:768px) {
	#row_4{margin:40px -15px !important}
}