.product_banner{
	width: 100%;
	overflow: hidden;
}
.product_banner img:last-of-type{
	display: none;
}
@media only screen and (max-width:991px ) {
	.product_banner img{
		width: 1200px;
		position: relative;
		left: 50%;
		margin-left: -600px;
	}
}
@media only screen and (max-width:767px ) {
	.product_banner img:first-of-type{
		display: none;
	}
	.product_banner img:last-of-type{
		display: inline-block;
	}
	.product_banner img{
		width: 100%;
		left: 0;
		margin-left: 0;
	}
}
@media only screen and (min-width:992px ) {
	.product_banner img{
		width: 100%;
	}
}
@media only screen and (min-width:1200px ) {
	.product_banner img{
		width: auto;
	}
}
@media only screen and (min-width:1921px ) {
	.product_banner img{
		width: 100%;
	}
}
.product_box{
	width: 100%;
	overflow: hidden;
	padding: 80px 0 40px;
}
.product_box ul{
	overflow: hidden;
}
.product_box ul li{
	margin-bottom: 25px;
	overflow: hidden;
}
.product_box ul li:nth-of-type(2n+1){
	padding-right: 15px;
}
.product_box ul li:nth-of-type(2n){
	padding-left: 15px;
}
.product_box ul li a{
	display: block;
	width: 100%;
	overflow: hidden;
	position: relative;
	color: #fff;
}
.product_box ul li a>img{
	width: 100%;
	transition: all 0.5s;
}
.product_box ul li a .product_mask{
	width: 50%;
	height: 100%;
	overflow: hidden;
	position: absolute;
	left: 0;
	top:0;
	padding: 35px 40px;
	background: rgba(11,58,110,0.8);
	line-height: 20px;
	font-size: 14px;
	transition: all 0.5s;
}
.product_box ul li:nth-of-type(3) a .product_mask,.product_box ul li:nth-of-type(4) a .product_mask{
	left: auto;
	right: 0;
}
.product_box ul li a h3{
	margin-bottom: 20px;
	font-size: 30px;
}
.product_box ul li a p{
	opacity: 0;
	transition: all 0.5s;
}
.product_mask img{
	position: absolute;
	right: 15px;
	bottom: 15px;
}
.product_box ul li a:hover .product_mask{
	width: 100%;
}
.product_box ul li a:hover>img{
	transform: scale(1.15);
}
.product_box ul li a:hover p{
	opacity: 1;
}
@media only screen and (max-width:991px ) {
	.product_box ul li{
		padding: 0 !important;
	}
	.product_box ul li:nth-of-type(2n+1) a .product_mask{
		left: 0;
		right: auto;
	}
	.product_box ul li:nth-of-type(2n) a .product_mask{
		left:auto;
		right:  0;
	}
	.product_mask p{
		display: none;
	}
}
@media only screen and (max-width:767px ) {
	.product_box{
		padding: 40px 0 20px;
	}
	.product_box ul li a h3{
		font-size: 24px;
		line-height: 35px;
	}
}
@media only screen and (min-width:992px ) {
	.product_box ul li a h3{
		font-size: 24px;
	}
}
@media only screen and (min-width:1200px ) {
	.product_box ul li a h3{
		font-size: 30px;
	}
}