.header{padding:45px 0 22px 0;}
.header .links{line-height:12px;}
.header .links a{color:#333;}
.back_to_index{margin-right:3px;}

.main_box{height:600px;background-color: #fff;text-align: center;}
.top_txt{padding-top:77px;margin-bottom:72px;}
.top_txt .txt{line-height:30px;font-size:14px;}
.link_box{font-size: 0;}
.link_box_con{display:inline-block;}
.link_box_con .link{width:260px;height:301px;background-image: url(img/l_r_pic.png);background-repeat:no-repeat;}
.link_box_con .personal,.link_box_con .personal1,.link_box_con .personal2{margin-right:134px;}
.link_box_con .personal1{background-position:-0px 0;}
.link_box_con .personal2{background-position:-260px 0;}
.link_box_con .org{background-position:-520px 0;}
.link_box_con .org1{background-position:-520px 0;}
.link_box_con .org2{background-position:-780px 0;}