html{font-size: 10px;}
body {
    width: 100%;
    height: 100%;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-size:16px;
    font-weight:400;
    color: #fff;
    line-height:26px;
    overflow-x: hidden;
    -moz-user-select:none;/*火狐*/
    -webkit-user-select:none;/*webkit浏览器*/
    -ms-user-select:none;/*IE10*/
    -khtml-user-select:none;/*早期浏览器*/
    user-select:none;
    background: #282422;
}
.all-courses-video{
}
#Modal6{
    /* position: relative; */
}
.modal16-close{
    margin-top: 100px;
    text-align: right;
    padding:0 6rem;
}
.modal16-close>img{
    width: 48px;
}
.modal16-close:hover{
    color: #ffffff;
}
.modal16-dialog{
    padding: 0;
}
.modal16-img{
    width: 100%;
}
.modal16-video{
    position: relative;
}
#Modal6{
    background: #282422;
}
.modal16-dialog{
}
.modal16-footer{
    padding-top: 17px;
    margin: -1px 0 0;
}
.modal16-footer>div{
    padding: 0;
    display: flex;
    flex-direction: column;
    justify-content: center;
}
.modal16-avatar{
    width: 94px;
    margin-right: 11px;
}
.modal16-font1{
margin-bottom: 10px;
}
.modal16-font1 a{
    font-size: 24px;
    /*font-family: Helvetica-Bold, Helvetica;*/
    font-weight: bold;
    color: #FFFFFF;
    line-height: 29px;
}
.modal16-font2{
    font-size: 20px;
/*font-family: Helvetica;*/
color: #FFFFFF;
line-height: 24px;
}
.modal16-font3{
    font-size: 18px;
/*font-family: PingFangHK-Semibold, PingFangHK;*/
font-weight: 600;
color: #282422;
line-height: 25px;
letter-spacing: 1px;
background: #E9D5CC;
border-radius: 12px;
padding: 12px 0;
text-align: center;
    cursor: pointer;
}
.play-btn{
    position: absolute;
    top: 50%;
    left: 50%;
    width: 17.8rem;
    height: 17.8rem;
    background: rgba(40, 36, 34, 0.37);
    transform: translate(-50%,-50%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.play-btn .icon-ziyuan{
    font-size: 8rem;
    color: #FFFFFF;
    filter: drop-shadow(0px 2px 4px rgba(0, 0, 0, .5));
}

@media (min-width: 577px){
    .modal16-dialog{
        /*height: 1005;*/
        padding-right: -30px;
    }
}
@media (min-width: 1600px){
    .modal16-close{
        padding-right: 5rem;
    }
    .modal16-dialog{
        max-width: 1200px;
    }
}

@media (max-width: 1400px){
    .modal16-dialog{
        padding: 0 30px;
    }
}
@media (max-width: 576px){

    .modal16-dialog{
        padding: 0 12px;
    }
    .modal16-close{
        margin-top: 75px;
    }
    .modal16-close img{
        width: 35px;
    }
    .play-btn{
        width: 60px;
        height: 60px;
    }
    .play-btn .icon-ziyuan{
        font-size: 30px;
    }
    .modal16-font1{
        font-size: 22px;
    }
    .modal16-font2{
        font-size: 14px;
        line-height: 20px;
    }
    .modal16-font3{
        margin-top: 10px;
    }
    .modal16-font3{
        margin-top:20px;
        padding: 6px 0;
        border-radius: 5px;
    }
    .modal16-font1 a{
        font-size: 20px;
        line-height: 22px;
    }
    .modal16-font3{
        font-size: 14px;
        line-height:18px;
    }
}