@media (-webkit-min-device-pixel-ratio: 1.25) {
    .layout-main {
        zoom: 0.796875;
    }
}
@media  (min-width: 1650px) {
    header .logo .content {min-width: 1600px;}
    .index_content .content {min-width: 1600px;transition: all .5s}
    .index_list .content {min-width: 1600px;transition: all .5s}
    header .nav>ul {min-width: 1600px;transition: all .5s}
    .teacher_content .bottom .content{min-width: 1600px;transition: all .5s}
    .teacher_content .top .title .content {min-width: 1600px;transition: all .5s}
    .index_banner .text .content {min-width: 1600px;transition:  all .5s}
}

/*@media  (max-width: 1650px) {*/
/*    .teacher_content .bottom .content>.left {font-size: 20px;}*/
/*    .index_content .content {width: 95%;transition: all .5s}*/
/*    .index_list .content {width: 95%;transition: all .5s}*/
/*    header .nav ul {width: 95%;transition: all .5s}*/
/*    .teacher_content .bottom .content {width: 90%;transition: all .5s}*/
/*}*/
@media (max-width: 990px) {
    header .logo {padding-left: unset;width: 60%;transition: all .5s}
    header .logo img{margin: 0 auto;width: 100%;transition: all .5s}
    header .nav ul {width: 95%;;transition: all .5s}
    header .nav ul li a{font-size: 16px;}
    .index_list .content {width: 95%;padding-top: 40px;flex-direction: column}
    .index_list .content .item {width: 100%;transition: all .5s}
    .index_list .content .item:first-child{margin-bottom: 50px;}
    .index_content .content{width: 95%;flex-direction: column;transition: all .5s}
    .index_content .content>.left {width: 100%;transition: all .5s}
    .index_content .content .between{width: 100%;margin-top: 30px;transition: all .5s}
    .index_content .content .between:last-child{width: 100%;transition: all .5s}
    .index_content .content .between .right_img img {margin: 0 auto}
    .index_content{padding-bottom: 40px;padding-top: 40px;}
    .index_list .content .item .list .list_s a{font-size: 16px;}
    .index_list .content .item .list .list_s span{font-size: 16px;}
    .index_list .content .item .text .right .title{font-size: 18px;}
    .index_list .content .item .text .right .txt{font-size: 16px;}
    .index_list .content .item .tit .left{font-size: 20px;}
    .index_list .content .item .tit .right{font-size: 18px;}
    .index_list .content .item .text .left{padding-left: 7px;padding-right: 7px;}
    .index_list .content .item .text .left p{font-size: 20px;}
    .index_content .content .between .nex_tit .left {font-size: 20px;}
    .index_content .content .between .list li .right{font-size: 18px;}
    .index_content .content .between .list li .left a {font-size: 18px;}
    footer .top p{font-size: 16px;}
    footer .bottom{font-size: 16px;}
    .teacher_content .bottom .content>.right {width: 100%;margin-top: 20px;margin-left: unset;}
    .demeanour_page .page {margin: 0 auto;width: 80%}
    .teacher_content.news_s .content .right .item .left{font-size: 20px;}
    .teacher_content.news_s .content .right .item .right{font-size: 20px;}
    .teacher_content.news .bottom .content .right h2{font-size: 20px;}
    .teacher_content.news .bottom .content>.right>.tit{font-size: 14px;}
    .teacher_content .bottom .content {flex-direction: column;width: 95%;transition: all .5s}
    .teacher_content .bottom .content .right .text{font-size: 18px;}
    .teacher_content.news .bottom .content{padding-bottom: 50px;width: 95%;transition: all .5s }
    .index_banner .text{font-size: 28px;bottom: 17%;}
    .teacher_content .bottom{margin-top: 40px;}
    .teacher_content.demeanour .bottom .content .right ul li {width: 48%;transition: all .5s}
    .teacher_content.demeanour .bottom .content .right{width: 100%;transition: all .5s;margin-left: unset;}
    .teacher_content.demeanour .bottom .content .right ul li:nth-of-type(n+3) {margin-top: 20px;}
    .teacher_content.demeanour .bottom .content .right .tit{font-size: 18px;}
    .teacher_content .top .title{font-size: 18px;transition: all .5s}
    header .nav {display: none}
    .index_content .content .between .nex_tit .right a{font-size: 20px;}
    header  .crumb {display: flex}
    header {display: flex;align-items: center;justify-content: space-between;position: relative;padding: 0 3vw }
    .teacher_content .bottom .content>.left {margin: 0 auto;width: 100%;padding-left: unset;padding-right: unset;transition: all .5s}
    .index_list .content .item .tit .right a {font-size: 20px;}
    .teacher_content .top .title .content{width: 95%;transition: all .5s}
    .index_banner .text .content{width: 95%;transition: all .5s}
}