@media screen and (max-width:1200px){
    /* logo */
    header{width: 100%}
    header .logo{width: 50%;}
    header .tel{width: 50%}
    header .tel{font-size:12px;}
    header .tel .t-bot{font-size:16px;margin-top:10px;}
    .img_none{display: none;}
    /* nav */
    nav{width: 100%;}
    nav a{width: 32%;padding: 0}
    /* 培训项目 */
    .pro{width: 100%;}
    .pro-list{width: 90%;margin:0 auto}
    .pro-list li{width: 100%;margin:10px 0;}
    .pro-list li img{width: 100%;height: auto}
    /* 师资力量 */
    .sz{margin-top:30px;}
    .sz .sz-people{width: 100%;}
    .sz .sz-people ul{width: 90%;margin:0 auto}
    .sz-people li{width: 100%;float: none;margin:15px 0}
    .sz-people li img{width: 100%;height:auto}
    /* 课程介绍 */
    .kc{width: 100%;}
    .k-width{width: 100%;}
    .kc-imgbox{display: none;}
    .k-width .k-p-left{float: none;margin:20px auto 0;border-bottom:1px dashed #ccc;padding-bottom:20px;}
    .k-width .k-p-right{float: none;margin:20px auto 0;border-bottom:1px dashed #ccc;padding-bottom:20px;}
    /* 国际项目 */
    .gj{width: 90%;margin: 0 auto}
    .gj-content > div{width: 100%;float: none;}
    .gj-content > div img{width: 100%; height: auto;}
    .gj-content > div h2{margin:10px 0 10px 0;font-size:16px;}
    .gj-content > div p{margin:0 0 10px 0;font-size:12px}
    /* 教学视频 */
    .videobox .video{width: 100%;}
    .videobox .video ul{width: 90%;margin: 0 auto;}
    .videobox .video ul li{width: 45%;margin:0 2.5%}
    .videobox .video ul li img{width: 100%;height: auto}
    .videobox .video ul li p{font-size:12px;margin:10px 0}
    /* 教学环境 */
    .jx{width: 100%;}
    .jx-top .jx-top-left{float: none;width: 100%;}
    .jx-top .jx-top-left img{width: 100%;height: auto}
    .jx-top .jx-top-right{width: 100%;}
    .jx-top .jx-top-right ul li{width: 33.3%;}
    .jx-top .jx-top-right ul li img{width: 100%;height: auto}
    .jx-bot .jx-top-left{width: 100%;}
    .jx-bot .jx-top-left ul li{width: 33.3%;}
    .jx-bot .jx-top-left ul li img{width:100%;height: auto;}
    .jx-bot .jx-top-right{float: none;width: 100%;}
    .jx-bot .jx-top-right img{width: 100%;height: auto}

    /* 关于 */
    .about{height: auto}
    .about .about-box{width: calc(100% - 20px);height:auto;position:static;top: 0;left: 0;margin-left: 0;padding:30px 10px 0}
    .about-d-left{width: 100%;float: none;}
    .about-d-right{width: 90%;margin:10px auto;float: none;}

    /* foot */
    .foot .f-content{width: 90%;margin:0 auto;padding-bottom:10px;}
    .foot .f-content > div{width: 100% !important;margin-top:30px;}
    .foot .f-content > div h2{font-size:14px;}
    .foot .f-content > div .address p{font-size:12px;}
    .foot .f-content > div .address{margin-top:5px;}
    .coperight{width:90%;margin:20px auto 0;}
    /* 悬浮 */
    .qq{display: none;}
    /* article */
    .arc-title{height: auto}
    .arc-t-box{width: 90%;margin:0 auto}
    .arc-title .arc-t-left{float: none;display: none;}
    .arc-title .arc-t-right{float: none;}
    .arc-content{width: 95%;margin: 20px auto;}
    .con-left{float: none;}
    .con-left img{width: 100%;height: auto}
    .con-right{float: none;width: 95%;margin: 0 auto}
	
	/* pro */
    .pro-content{width: 95%;margin: 20px auto;}
    .pro-left{float: none;}
    .pro-left img{width: 100%;height: auto}
    .pro-right{float: none;width: 95%;margin: 0 auto}
	
   /* video */
    .video-content{width: 95%;margin: 20px auto;} 
	.video-main iframe{width: 95%}
	
}