.mo-menu {
    display: none;
}

/* 1920px start */

@media (max-width: 1920px) and (min-device-width: 1650px) {}

/* 1650px end */

/* 1649px start */

@media (max-width: 1649px) and (min-device-width: 1400px) {}

/* 1650px end */

/* 1399px start */

@media (max-width: 1399px) and (min-device-width: 1200px) {
    html {
        font-size: 54%;
    }
}

/* 1200px end */

/* 1199px start */

@media (max-width: 1199px) and (min-device-width: 992px) {
    html {
        font-size: 50%;
    }

    .banner .title h1 {
        font-size: 10rem;
    }

    .banner .about {
        margin-top: 70px;
    }

    .banner .video-block {
        margin-top: 80px;
    }
}

/* 992px end */

/* 991px start */

@media (max-width: 991px) and (min-device-width: 768px) {

    html {
        font-size: 48%;
    }

    .banner .title h1 {
        font-size: 9rem;
    }

    .banner .about {
        margin-top: 60px;
    }

    .banner .video-block {
        margin-top: 70px;
    }

    .banner .video-block .item a.btn {
        font-size: 2.6rem;
    }
}

/* 768px end */

/* 767px start */

@media (max-width: 767px) and (min-device-width: 576px) {

    html {
        font-size: 46%;
    }

    .banner .title h1 {
        font-size: 7rem;
    }

    .banner .about {
        margin-top: 50px;
    }

    .banner .video-block {
        margin-top: 60px;
    }

    .banner .video-block .item a.btn {
        font-size: 2.3rem;
    }
}

/* 576px end */

/* 575px start */

@media (max-width: 575px) and (min-device-width: 375px) {

    html {
        font-size: 46%;
    }

    .banner .title h1 {
        font-size: 5rem;
    }

    .banner .about {
        margin-top: 50px;
    }

    .banner .video-block {
        margin-top: 60px;
    }

    .banner .video-block .item a.btn {
        font-size: 2rem;
    }
}

/* 375px end */