@media (min-width: 1000px){
    #stu-academy .onlineCourseBox{height:auto;width:100%;overflow:hidden;background-color:#FFF;}
    #stu-academy .onlineCourseBox .banner{
        width:100%;height:auto;display:block;position:relative;
        background-color:#F4FFF2;margin-bottom:2.1rem;
    }
    #stu-academy .onlineCourseBox .banner img{width:100%;border:0;padding:0;display:block;}
    #stu-academy .onlineCourseBox .banner-po{
        width:10rem;height:1.3rem;overflow:hidden;border-radius:.2rem;
        box-shadow: 1px 15px 23px 0px rgba(229,229,229,0.25);position:absolute;
        left:50%;transform: translateX(-50%);bottom:-.9rem;
    }
    #stu-academy .onlineCourseBox .banner-po img{float:left;height:1.3rem;}
    #stu-academy .onlineCourseBox .part1{
        width:12rem;height:8.42rem;overflow:hidden;margin:0 auto .8rem auto;
    }
    #stu-academy .onlineCourseBox .part1 img{width:100%;height:8.42rem;}

    #stu-academy .onlineCourseBox .part2{
        width:12rem;height:3.98rem;overflow:hidden;margin:0 auto .6rem auto;
    }
    #stu-academy .onlineCourseBox .part2 img{width:100%;height:3.98rem;}

    #stu-academy .onlineCourseBox .part3{
        width:12rem;height:2.46rem;overflow:hidden;margin:0 auto .6rem auto;
    }
    #stu-academy .onlineCourseBox .part3 img{width:100%;height:2.46rem;}

    #stu-academy .onlineCourseBox .part4{
        width:13rem;height:4.22rem;overflow:hidden;margin:0 auto .8rem auto;
    }
    #stu-academy .onlineCourseBox .part4 img{width:100%;height:4.22rem;}

    #stu-academy .onlineCourseBox .part5{
        width:12rem;height:4.98rem;overflow:hidden;margin:0 auto .8rem auto;
    }
    #stu-academy .onlineCourseBox .part5 img{width:100%;height:4.98rem;}

    #stu-academy .onlineCourseBox .part6{
        width:12rem;height:5.76rem;overflow:hidden;margin:0 auto .6rem auto;
    }
    #stu-academy .onlineCourseBox .part6 img{width:100%;height:5.76rem;}

    #stu-academy .onlineCourseBox .part7{
        width:12rem;height:2rem;overflow:hidden;margin:0 auto 1.89rem auto;
        box-shadow: 1px 15px 23px 0px rgba(229,229,229,0.25);
        border-radius:.2rem;
    }
    #stu-academy .onlineCourseBox .part7 img{width:100%;height:2rem;}

    #stu-academy .onlineCourseBox .part8{
        width:100%;height:8.4rem;margin:0 auto .6rem auto;
        position:relative;background: url("../image/online_course/navbg.jpg") repeat-x left top;
        background-size:1px 100%;
    }
    #stu-academy .onlineCourseBox .part8 .content{
        width:12rem;margin:0 auto;position:relative;
    }
    #stu-academy .onlineCourseBox .part8 .content .just_nav{
        position:absolute;width:12rem;margin:0 auto;left:0;top:-1.29rem;
        display: flex;flex-wrap: nowrap;justify-content: space-between;
    }
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav{
        width:2.6rem;height:2.2rem;border-radius: .2rem;overflow:hidden;cursor:pointer;
    }
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav img{width:100%;height:100%;}
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav.show{
        box-shadow: 1px 15px 23px 0px rgba(229,229,229,0.25);
    }
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav .base_img{display:block;}
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav .hover_img{display:none;}
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav.show .base_img{display:none;}
    #stu-academy .onlineCourseBox .part8 .content .just_nav .nav.show .hover_img{display:block;}
    #stu-academy .onlineCourseBox .part8 .content .content1{
        width:11.42rem;margin:0 auto 0 auto;display:none; padding-top:1.71rem;
    }
    #stu-academy .onlineCourseBox .part8 .content .content2{
        width:6rem;margin:0 auto 0 auto;display:none;padding-top:1.60rem;
    }
    #stu-academy .onlineCourseBox .part8 .content .content3{
        width:11.3rem;margin:0 auto 0 auto;display:none;padding-top:1.80rem;
    }
    #stu-academy .onlineCourseBox .part8 .content .content4{
        width:10.93rem;margin:0 auto 0 auto;display:none;padding-top:1.2rem;
    }
    #stu-academy .onlineCourseBox .part8 .content .show{display:block;!important;}
    #stu-academy .onlineCourseBox .part8 .content img{width:100%;!important;}

    #stu-academy .onlineCourseBox .part9{
        width:11.76rem;height:1.42rem;overflow:hidden;margin:0 auto .6rem auto;
    }
    #stu-academy .onlineCourseBox .part9 img{width:100%;height:1.42rem;}
    #stu-academy .onlineCourseBox .part10{
        width:11.76rem;height:8.3rem;overflow:hidden;margin:0 auto 1.57rem auto;
    }
    #stu-academy .onlineCourseBox .part10 img{width:100%;height:8.3rem;}

    #stu-academy .onlineCourseBox .part11{
        width:100%;height:7.7rem;overflow:hidden;margin:0 auto 0 auto;
        position:relative;
    }
    #stu-academy .onlineCourseBox .part11 .bgImg{width:100%;height:7.7rem;}
    #stu-academy .onlineCourseBox .part11 .part11_one{
        width:12rem;height:3.71rem;
        position:absolute;left:50%;transform: translateX(-50%);top:-.9rem;
    }
    #stu-academy .onlineCourseBox .part11 .part11_two{
        width:12rem;height:2.96rem;
        position:absolute;left:50%;transform: translateX(-50%);bottom:1rem;
    }
    #stu-academy .onlineCourseBox .part11 .part11_two .box{
        width:100%;height:100%;overflow:hidden;position:relative;
    }
    #stu-academy .onlineCourseBox .part11 .part11_two .box img{width:100%;height:100%;}
    #stu-academy .onlineCourseBox .part11 .part11_two .box .click_href{
        width:3.27rem;height:.22rem;cursor:pointer;position:absolute;left:1.2rem;top:.3rem;
        display:block;
    }
}
@media (max-width: 999px){
    #stu-academy .onlineCourseBox{display:none;}
}