@media screen and (max-width: 750px) {
    #header-nav {
        display: none;
    }

    #header-banner {
        display: none;
    }

    #footer {
        display: none;
    }

    .freq-frist-han {
        display: none;
    }

    .list-pintu-all {
        display: none;
    }

    .list-pintu-all1 {
        display: none;
    }

    .list-pintu-all2 {
        display: none;
    }

    /* 移动端声乐艺考视频头部 */
    .list-seon-viode {
        margin: 0 auto;
    }

    .yd-list-top-wear {
        margin: 0 auto;
    }

    .yd-list-top-wear img {
        width: 0.36rem;
        height: 0.31rem;
        margin-right: 0.04rem;
    }

    .yd-list-top-wear {
        display: flex;
        justify-content: center;
        align-items: center;
        margin-top: 0.31rem;
        margin-bottom: 0.16rem;
    }

    .yd-diande-top-hgroup {
        font-size: 10px;
    }

    .yd-diande-top-hgroup h2 {
        font-size: 0.15rem;
        font-family: SourceHanSansCN-Bold, SourceHanSansCN;
        font-weight: bold;
        color: #D5081E;
        line-height: 0.22rem;
    }

    .yd-diande-top-hgroup strong {
        font-size: 0.06rem;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #D5081E;
        line-height: 0.09rem;
        display: inline-block;
    }

    .yd-diande-top-hgroup span {
        width: 0.65rem;
        height: 0.03rem;
        background: #D5081E;
        font-size: 3px;
        display: inline-block;
        transform-origin: 0 0;
        transform: skew(30deg);
    }



    /* 声乐艺考视频展示列表 */
    .list-seon-viode {
        margin: 0 0.15rem;

    }


    .binshi-alltest-video {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }


    .binshi-alltest-video dl {
        width: 1.66rem;
        border-radius: 0.06rem 0.06rem 0px 0px;
        margin-bottom: 0.12rem;
    }

    .binshi-alltest-video dl dt {
        width: 100%;
        height: 0.93rem;
        position: relative;
    }

    .binshi-alltest-video dl dt .samll-btn-red img {
        width: 0.23rem;
        height: 0.2rem;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%)
    }

    .binshi-alltest-video dl dt img {
        width: 100%;
        /* height: 0.94rem; */
        border-radius: 0.06rem 0.06rem 0px 0px;
        position: absolute;
    }

    .binshi-alltest-video dl dd {
        width: 100%;
        height: 0.45rem;
        background: #fff;
        font-size: 16px;
        text-align: center;
        border-radius: 0px 0px 0.06rem 0.06rem;
        box-shadow: 0px 0px 9px 0px #d1d1d1
    }

    .binshi-alltest-video dl dd span {

        font-size: 0.09rem;
        font-family: SourceHanSansCN-Medium, SourceHanSansCN;
        font-weight: 500;
        color: #4A4A4A;
        line-height: 0.23rem;

    }

    .binshi-alltest-video dl dd p {

        font-size: 0.09rem;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #4A4A4A;
        line-height: 0.23rem;
        text-align: center;
    }


    /* 移动三个按钮 */
    .yd-three-quan .yd-wear-nav {
        padding: 0 0.3rem;
        display: flex;
        justify-content: space-between;
    }

    .yd-wear-nav .yd-first-btn, .yd-wear-nav .yd-secon-btn {
        width: 50%;
        background: #FF5653;
        display: flex;
        font-size: 0.15rem;
        display: flex;
        justify-content: center;
        height: 0.29rem;
        height: 0.35rem;
    }

    .yd-wear-nav .yd-first-btn a, .yd-wear-nav .yd-secon-btn a {
        line-height: 0.35rem;
        margin: 0 auto;
        text-align: center;
        display: inherit;
        color: aliceblue;
    }

    .yd-wear-nav .yd-first-btn {
        margin-right: 0.045rem;
        border-top-left-radius: 0.18rem;
        border-bottom-left-radius: 0.18rem;
    }

    .yd-wear-nav .yd-first-btn img {
        width: 0.25rem;
        height: 0.2rem;


    }

    .yd-wear-nav .yd-secon-btn img {
        width: 0.2rem;
        height: 0.2rem;

    }

    .yd-wear-nav .yd-secon-btn {
        border-top-right-radius: 0.18rem;
        border-bottom-right-radius: 0.18rem;
    }

    .yd-wear-nav .yd-secon-btn {
        margin-left: 0.09rem;
    }

    .yd-wear-nav .yd-first-btn img, .yd-wear-nav .yd-secon-btn img {
        display: inline-block;
        line-height: 0.49rem;
        padding: 0.05rem;
    }

    .yd-three-quan .yd-ten-btn {
        width: 3.18rem;
        height: 0.35rem;
        border-radius: 35px;
        border: 2px solid #EE3044;
        font-size: 0.15rem;
        text-align: center;
        margin: 0.1rem auto;

    }

    .yd-three-quan .yd-ten-btn a {
        width: 3.18rem;
        font-size: 0.15rem;
        font-family: PingFangSC-Semibold, PingFang SC;
        font-weight: 600;
        color: #EE3044;
        line-height: 0.35rem;
        margin: 0 auto;
    }




    /* 移动西洋器乐艺考视频 */

    .xiyang-vie-all {
        margin: 0 0.15rem;
    }

    .word-vin-video {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
    }

    .word-vin-video dl {
        width: 1.66rem;
        border-radius: 0.06rem 0.06rem 0px 0px;
        margin-bottom: 0.12rem;
    }

    .word-vin-video dl:nth-child(9) {
        display: none;
    }

    .word-vin-video dl dt {
        width: 100%;
        height: 0.94rem;
        position: relative;

    }

    .word-vin-video dl dt img {
        width: 100%;
        height: 0.94rem;
        border-radius: 0.06rem 0.06rem 0px 0px;
        position: absolute;
    }

    .word-vin-video dl dt .xiyang-btn-red {}

    .word-vin-video dl dt .xiyang-btn-red img {
        width: 0.23rem;
        height: 0.2rem;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%)
    }

    .word-vin-video dl dd {
        width: 100%;
        height: 0.3rem;
        background: #fff;
        font-size: 16px;
        text-align: center;
        border-radius: 0px 0px 0.06rem 0.06rem;
        box-shadow: 0px 0px 9px 0px #d1d1d1
    }

    .word-vin-video dl dd b {
        font-size: 0.09rem;
        font-family: SourceHanSansCN-Bold, SourceHanSansCN;
        font-weight: bold;
        color: #EE3044;
        line-height: 0.3rem;
        margin-right: 0.13rem;
    }

    .word-vin-video dl dd p {
        font-size: 0.09rem;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #4A4A4A;
        line-height: 0.14rem;
        display: inline-block;
    }

    .word-vin-video dl dd i {
        display: none;
    }

    /* 移动民族器乐艺考视频 */
    .nation-all-video-lisr {
        margin: 0 0.15rem;
    }

    .nality-san-video {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between
    }

    .nality-san-video dl {
        width: 1.66rem;
        border-radius: 0.06rem 0.06rem 0px 0px;
        margin-bottom: 0.12rem;
    }

    .nality-san-video dl dt {
        width: 100%;
        height: 0.94rem;
        position: relative;
    }

    .nality-san-video dl dt img {
        width: 100%;
        height: 0.94rem;
        border-radius: 0.06rem 0.06rem 0px 0px;
        position: absolute;
    }

    .nality-san-video dl dt .ninzu-btn-red img {
        width: 0.23rem;
        height: 0.2rem;
        position: absolute;
        left: 50%;
        top: 50%;
        transform: translate(-50%, -50%)
    }

    .nality-san-video dl dd {
        width: 100%;
        height: 0.3rem;
        background: #fff;
        font-size: 16px;
        text-align: center;
        border-radius: 0px 0px 0.06rem 0.06rem;
        box-shadow: 0px 0px 9px 0px #d1d1d1;
        line-height: 0.3rem;
    }

    .nality-san-video dl dd b {
        width: 0.62rem;
        height: 0.2rem;
        display: inline-block;
        background: #EE3044;
        border-radius: 0.04rem;
        font-size: 0.09rem;
        font-family: SourceHanSansCN-Bold, SourceHanSansCN;
        font-weight: bold;
        color: #FFFFFF;
        line-height: 0.2rem;
        margin: 0 auto;
        text-align: center;
        margin: 0 0.06rem;
    }

    .nality-san-video dl dd span {
        font-size: 0.09rem;
        font-family: SourceHanSansCN-Regular, SourceHanSansCN;
        font-weight: 400;
        color: #4A4A4A;
        line-height: 0.13rem;
    }

    .nality-san-video dl dd em {
        font-size: 0.1rem;
        color: #4A4A4A;
        margin-right: 0.03rem;
    }

}