.center {
	position: relative;
	width:100%;
	min-width:1000px;
	height: auto;
	overflow: hidden;
}
.banner {
	position: relative;
	margin: 10px auto;
	width: 1200px;
	height: 580px;
	overflow: hidden;
	background: transparent url("../images/banner.jpg") no-repeat scroll center 0;
	-webkit-background-size: 1200px 580px;
	-o-background-size: 1200px 580px;
	background-size: 1200px 580px;
}
.banner_content {
	position: relative;
	margin: 0px auto;
	width: 1000px;
	height: 580px;
}
.paper_weixin {
	position: absolute;
	width:246px;
	height:437px;
	top: 80px;
	left: 50px;
}
.joinus {
	position: absolute;
	height: 580px;
	top: 80px;
	left: 450px;
	color: #FFFFFF;
}
.joinus_title {
	position: relative;
	display:block;
	font-size: 60px;
}
.joinus_desc {
	position: relative;
	display:block;
	font-size: 24px;
	padding: 20px 0;
}
.joinus_weixin {
	position: relative;
	font-size: 50px;
	padding: 40px 0;
}

.joinus_weixin span {
	display: block;
	font-size: 24px;
}


.main{
	position: relative;
	width: 1200px;
	height: auto; 
	text-align: center;
	margin: 20px auto;
	overflow: hidden;
}
.main-left{  
    float:left;
    width: 386px;  
    height: 518px;  
    background: transparent url("../images/main1.jpg") no-repeat scroll 0 0;
}         
.main-center{
    float:left;
    margin-left:20px;
    width: 386px;
    height: 518px;    
    background: transparent url("../images/main2.jpg") no-repeat scroll 0 0;
}  
.main-right{  
    float:left;
    margin-left:20px;
    width: 386px;  
    height: 518px;  
    background: transparent url("../images/main3.jpg") no-repeat scroll 0 0;
}