.index-main{background-color:#fff}.index-main .main-banner{height:430px}.index-main .main-content{width:1200px;margin-left:auto;margin-right:auto}.index-main .main-news{height:63px;background-color:#f5f6fa}@media screen and (max-width:770px){.index-main .main-banner{height:15.625rem}.index-main .main-content{width:auto}.index-main .main-news{height:3.35648148rem}}.index-layout{padding-top:17px;background-color:#fff}.index-layout .index-layout-item{text-align:center;margin-top:50px}.index-layout .index-layout-item img{margin-top:30px}@media screen and (max-width:770px){.index-layout{padding-top:0;background-color:#fff}.index-layout-item{margin-top:1.44675926rem;width:80%;margin:auto}.index-layout-item img{width:100%;margin-top:.86805556rem}}