.first{width:100%;height:650px;background:url(https://img2.baidu.com/it/u=3302043931,2310876647&fm=253&fmt=auto&app=138&f=JPEG?h=334&w=500) no-repeat;background-size:100% 100%}.first .first-a{width:400px;height:auto;margin:auto;width:1200px;padding-top:120px}.first .first-a .first-a-left{width:400px;height:400px;float:left}.first .first-a .first-a-left .first-bottom .el-button{float:left;margin:5px 15px;height:30px}.first .first-a .first-a-left .first-ab h1{color:#fff}.first .first-a .first-a-left .first-ab h5{color:#fff;opacity:.6;padding:20px 0;letter-spacing:2px}.first .first-a .first-a-right{width:400px;height:400px;float:right}.first .first-a .first-a-right img{width:400px;height:400px}.second{width:100%;height:650px;background-size:100% 100%}.second .first-a{width:400px;height:auto;margin:auto;width:1200px;padding-top:120px}.second .first-a .first-a-left{width:400px;height:400px;float:right}.second .first-a .first-a-left .first-bottom .el-button{float:left;height:30px}.second .first-a .first-a-left .first-ab h1{color:#000}.second .first-a .first-a-left .first-ab h5{color:#000;opacity:.6;padding:20px 0;letter-spacing:2px}.second .first-a .first-a-right{width:400px;height:400px;float:right;float:left}.second .first-a .first-a-right img{width:400px;height:400px}.el-button img{margin-top:-10px}