.w1800{width: 1800px;margin: 0 auto;box-sizing: border-box;}

.channel{align-items: center;}
.column2 span{margin-right: 50px;display: inline-block;padding: 0;margin: 37px 0 38px;color: #17233d;}
.column2 span.current{padding-left: 10px;color: #014da1;font-weight: 600;border-bottom: none;border-left: 4px solid #014DA1;}

.search{width: 535px;height: 50px;}
.search .search_input{width: 435px;height: 50px;line-height: 50px;background: #F8F8F9;border-radius: 4px;}
.search .search_input input{padding-left: 43px;width: 100%;height: 100%;border: none;background: #F8F8F9;box-sizing: border-box;}
.search .search_input input::placeholder{font-size: 15px;font-weight: 400;color: #9EA7B4;}
.search .nav_icon_sousuo_d{top: 16px;left: 15px;}
.search .search_btn{width: 100px;height: 50px;line-height: 50px;background: #014DA1;border-radius: 0px 4px 4px 0px;font-size: 15px;font-weight: 600;color: #FFFFFF;line-height: 50px; text-align: center;}

.concern{padding-top: 30px;background: #F8F8F9;}
.concern li a:hover {box-shadow: 0px 5px 25px 0px rgb(0 0 0 / 10%);}
.banner img{max-width: 100%;}
@media (max-width: 1790px) {
    .banner img{max-width: 100%;}
    .w1800{width: 100%;}
}

@media ( max-width : 499px){
    .list .album-item{
        width: 94%;
    }
    .channel{padding: 5% 0;}
    .pic-view{display: none;}
    .search{width: 100%;padding:2% 5%;box-sizing: border-box;}
    .search .search_btn{margin-left: 2%;}
}