.about_box{
	box-sizing: border-box;
}
.about_box>h2{
	margin-bottom: 22px;
}
.about_box>span{
	float: right;
	margin-bottom: 22px;
}
.about_bj{
	width: 100%;
	padding-bottom: 48px;
	border-bottom:1px solid #eee;
}
.about_bj>img{
	width: 100%;
	margin-bottom: 40px;
}
.about_bj>h1{
	font-size: 18px;
	color:#666;
	font-weight: bold;
}
.about_bj>p{
	font-size: 14px;
	line-height: 24px;
	color:#666;
}
.rd_list{
	width: 100%;
	overflow: hidden;
	padding-top: 22px;
	padding-bottom: 40px;
	border-bottom: 1px solid #eee;
	box-sizing: border-box;
}
.rd_item{
	float: left;
	margin-left: 20px;
}
.rd_item:first-child{
	margin-left: 0;
}

.product_list{
	overflow: hidden;
	padding-top: 22px;
	box-sizing: border-box;
}
.product_item{
	margin-top: 20px;
	width: 253px;
	height: 302px;
	background-color: #dfdfdf;
	float: left;
	margin-left: 42px;
	text-align: center;
	color:#333;
	font-size: 14px;
	padding-top: 46px;
	box-sizing: border-box;
}
.product_item:nth-of-type(4n+1){
	margin-left: 0;
}
.product_item>img{
	display: block;
	margin:0 auto;
	margin-bottom: 22px;
}
.product_item>span{
	display: block;
	margin-bottom: 4px;
}
.product_item>p{
	margin-bottom: 58px;
}
.product_item>a{
	display: block;
	width: 134px;
	height: 36px;
	line-height: 36px;
	text-align: center;
	color:#fff;
	background-color: #000;
	margin:0 auto;
}