.by_top_bg{width:100%;height:546px;background:url(/images/zxfw_bg_20191114.jpg) no-repeat center top;}.by_top{width:1300px;height:546px;margin:0 auto;}.by_topl{float:left;margin-top:20px;}.by_topr{float:right;}.by_topr li{margin-top:18px;}.by_bottom{width:1300px;height:118px;margin:0 auto;padding-left:15px;position:relative;font:16px/38px "microsoftyahei";}.by_bottom .box{overflow:hidden;position:relative;width:99%;height:140px;}.by_bottom .list{overflow:hidden;width:99999px;}.by_bottom .prev{position:absolute;top:50px;width:45px;height:42px;left:-30px;background:url(/images/zxfw_left_20191114.jpg) no-repeat left;cursor:pointer;z-index:10000;}.by_bottom .next{position:absolute;top:50px;width:45px;height:42px;right:-30px;background:url(/images/zxfw_right_20191114.jpg) no-repeat right;cursor:pointer;z-index:10000;}.by_bottom li{float:left;margin-top:20px;width:239px;height:118px;padding-left:16px;border:1px solid #f0f0f2;position:relative;}.by_bottom li:hover{transition:all .0s ease;box-shadow:0 0 10px #70caf7;border:1px solid #70caf7;}.by_bottom li a:hover{text-decoration:none;}.by_bottom li a img{position:absolute;right:15px;top:10px;}.by_bottom li a .littleTitle{font-size:15px;color:#999999;line-height:42px}.by_bottom .ul_l1{background:url(/images/zxfw_icon1_20191114.jpg) no-repeat right 5px;}.by_bottom .ul_l2{background:url(/images/zxfw_icon2_20191114.jpg) no-repeat right 5px;}.by_bottom .ul_l3{background:url(/images/zxfw_icon3_20191114.jpg) no-repeat right 5px;}.by_bottom .ul_l4{background:url(/images/zxfw_icon4_20191114.jpg) no-repeat right 5px;}.by_bottom .ul_l5{background:url(/images/zxfw_icon5_20191114.jpg) no-repeat right 5px;}.by_bottom p{font:20px/64px "microsoftyahei";}