.banner{width:1920px;height:auto}.contact{border-bottom:4px solid #ff7800!important}.main-box{width:1200px;padding-bottom:100px;background:#fff;margin:75px auto 0}.main-box .item{margin-left:109px;width:1018px;position:relative;margin:75px auto 0}.main-box .item .title{color:#6e6e6e;font-size:18px;margin-top:70px;margin-bottom:50px}.main-box .item .text{margin-top:10px;line-height:1.6;color:#6e6e6e;font-size:14px}.main-box .item .spec{font-size:30px;color:#787878}