.header{margin:0 auto;max-width:1920px;height:653px;background:url("./images/banner.png") no-repeat;background-size:contain;position:relative}.nav{position:fixed;left:0;top:0;width:100%;height:75px;background:rgba(0,0,0,0.2);display:flex;justify-content:center;align-items:center}.nav>img{width:106px;height:27px}.nav .tabs{margin-left:715px;display:flex}.nav .tab-item{display:block;width:80px;height:75px;text-align:center;line-height:75px;font-size:14px;color:#fff;opacity:.5}.nav .tab-item:hover{color:#fff}.nav .tab-item.active{opacity:1;border-bottom:2px solid #fff;background:rgba(225,225,225,0.2)}.sticky{transition:0.5s ease-in-out;background:#fff;box-shadow:0px 4px 4px 0px rgba(0,0,0,0.36)}.sticky .tab-item{color:#EC2B2B;opacity:.5}.sticky .tab-item:hover{color:#EC2B2B}.sticky .tab-item.active{opacity:1;border-bottom:2px solid #EC2B2B;background:rgba(236,43,43,0.1)}.container{max-width:1920px;overflow-x:hidden;margin:0 auto}.floor-1{background:#fff;width:100%;height:1089px;padding:120px 0;box-sizing:border-box;display:flex;flex-direction:column;align-items:center;justify-content:center}.floor-1 .company{margin:169px auto;width:993px;height:337px}.floor-1-content{display:flex}.floor-1-content .left{padding-top:14px}.floor-1-content .left .title{width:112px;height:38px}.floor-1-content .left .desc{width:447px;font-size:16px;color:#333333;line-height:27px;text-align:left}.floor-1-content .right{margin-left:47px;width:470px;height:337px}.floor-2{width:100%;height:861px;background:#EFEFEF;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:100px 0;box-sizing:border-box}.floor-2 .title{width:112px;height:38px}.floor-2 .desc{margin-top:65px;width:1092px;height:537px}.floor-3{width:100%;height:827px;background:#fff;display:flex;flex-direction:column;justify-content:center;align-items:center;padding:97px 0;box-sizing:border-box}.floor-3 .text{font-size:18px;color:#333333;line-height:20px;margin-top:60px}.floor-4{width:100%;height:732px;background:#152640;display:flex;flex-direction:column;justify-content:center;align-items:center}.floor-4 .title{width:141px;height:38px}.wrapper{display:flex;justify-content:center;align-items:center}.wrapper .item{width:184px;margin:0 120px}.wrapper .item>img{width:184px;height:184px}.wrapper .item>.title{width:100%;margin-top:40px;font-size:28px;color:#FFFFFF;line-height:40px;text-align:center}.wrapper .item .text{display:block;margin-left:26px;white-space:nowrap;width:100%;margin-top:33px;font-weight:400;font-size:16px;color:#FFFFFF;line-height:27px;text-align:left}.floor-5{width:100%;height:528px;background:#fff;display:flex;justify-content:center;align-items:center}.floor-5 .lf{width:476px;display:flex;flex-direction:column;justify-content:center;align-items:flex-start}.floor-5 .lf .title{width:111px;height:27px}.floor-5 .lf .text{margin-top:49px;font-weight:400;font-size:16px;color:#333333;line-height:27px;text-align:left}.floor-5 .rg{margin-left:50px;display:flex}.floor-5 .rg>img{width:222px;height:295px}.floor-5 .rg>img:last-child{margin-left:24px}.footer{width:100%;height:221px;background:#152640;padding-top:24px;box-sizing:border-box}.footer .content{width:992px;margin:0 auto}.footer .desc{font-weight:400;font-size:14px;color:rgba(225,225,225,0.7);line-height:30px;text-align:left}.footer .imgs{margin-top:16px;display:flex;justify-content:flex-start;align-items:center}.footer .imgs>img{width:91px;height:36px;margin-right:16px}.about-content{background:#fff;height:75px}.section{padding:75px auto;box-sizing:border-box;display:flex;flex-direction:column;justify-content:center;align-items:center}.section>img{width:1920px;height:752px}body,html{width:100%;height:100%}