.banner{
	position: relative;
	margin-top: 64px;
	width: 100%;
	height: auto;
	overflow: hidden;
}
.banner img{
	width: 100%;
}
.row{
	margin: 0;
}
.casebox{
	margin: 40px auto;
	height: auto;
	overflow: hidden;
	position: relative;
	z-index: 9;
}
.caseItem{
	padding: 0 10px;
}
.caseItem img{
	width: 100%;
	margin-bottom: 24px;
}
@media only screen and (min-width: 320px) and (max-width:750px) {
	.casebox{
		margin: 22px auto;
	}
}