.banner{background:url(/static/img/banner_04.png) no-repeat 50%;background-size:cover}.item-box{border-right:1px solid #f0f3f7;border-bottom:1px solid #f0f3f7;min-height:250px}.item-box .title{color:#111;margin-bottom:15px;height:70px}.item-box .desc{color:#999;line-height:1.7}