@media screen and (max-width: 900px) {
    .line {
        width: 50px;
    }

    .modal-3d-viewer {
        padding: 2%;
    }
}

@media screen and (max-width: 767px) {
    .header-area.header-sticky {
        top: 0 !important;
        padding: 0;
    }

    .header-area.header-sticky .logo {
        padding-left: 15px;
    }

    .header-area.header-sticky .logo-2 {
        padding-left: 15px;
    }

    .header-area.header-sticky .nav {
        text-align: left !important;
        margin-top: 80px !important;
        height: calc(100vh - 70px);
        background: #1f272bb5;
        padding-bottom: 150px;
        position: relative;
        overflow: auto!important;
    }

    .header-area.header-sticky .nav:after {
        content: "  ";
        bottom: 0;
        left: 0;
        width: 100vw;
        display: block;
        height: 25px;
        background: #f7f7f7;
        border-bottom-left-radius: 8px;
        border-bottom-right-radius: 8px;
    }

    .header-area .main-nav .nav li a {
        padding-left: 15px !important;
    }

    .header-area .main-nav .nav li .fa-search {
        font-size: 15px;
        margin-top: 17px !important;
        position: relative;
    }

    .header-area .main-nav .nav li .fa-search:after {
        content: "Tìm kiếm";
        font-size: 13px;
        font-family: 'Playfair Display';
        margin-left: 10px;
        font-weight: 700;
    }

    .header-area .main-nav .nav li .sub-menu .input-group .input-group-append .btn-secondary {
        background: #ffffff;
        border: none;
        border-bottom-left-radius: 0;
        border-top-left-radius: 0;
        margin-left: 4ppx;
        position: relative;
        left: 0;
    }

    .header-area .main-nav .nav li .sub-menu .input-group .form-control {
        border: none !important;
    }

    .header-area .main-nav .nav li .sub-menu .input-group .fa-search:after {
        display: none;
    }

    .header-area .main-nav .nav li .sub-menu .input-group .fa-search {
        color: #6c757d !important;
        margin-top: 0 !important;
    }

    .sub-header {
        z-index: auto;
        margin-top: 80px;
        position: relative;
    }

    .sub-header .input-group {
        padding: 8px 60px 8px 15px !important;
    }

    .sub-header .input-group:after {
        content: " ";
        width: 39px;
        height: 27px;
        right: 10px;
        top: 12px;
        position: absolute;
        background-image: url(https://freepngimg.com/download/vietnam/3-2-vietnam-flag-png-picture.png);
        ; margin: auto;
        ; ; background-position: center;
        ; ; border-radius: 4px;
        ; ; ; background-size: cover;
        ; ; ; }

    .sub-header .input-group .form-control {
        border: none !important;
    }

    .sub-header .input-group-append .btn-secondary {
        background: #ffffff;
        border: none;
        border-bottom-left-radius: 0;
        border-top-left-radius: 0;
        margin-left: 4ppx;
        position: relative;
        left: 0;
    }

    .sub-header .input-group-append .btn-secondary i {
        color: #6c757d !important;
    }

    .home-slider .item {
        height: 160px;
        margin-top: 0;
    }

    section.contact-us #contact {
        margin-top: 30px;
        padding: 4px;
        margin-bottom: 0;
    }

    section.contact-us #contact hr {
        margin-top: 0 !important;
    }

    section.contact-us #contact .feature-thumb {
        margin-bottom: 21px;
    }

    section.contact-us #contact .feature-thumb strong {
        font-size: 15px;
    }

    section.contact-us #contact .feature-thumb .fa {
        font-size: 20px;
    }

    section.contact-us #contact .feature-thumb p {
        font-size: 14px;
        color: #646464;
    }

    section.apply-now .section-heading {
        text-align: center;
        margin-bottom: 10px;
        margin-top: 25px;
    }

    section.apply-now .service-item {
        margin-top: 20px !important;
    }

    section.upcoming-meetings .section-heading {
        text-align: center;
        margin-bottom: 10px;
        margin-top: 25px;
    }

    section.upcoming-meetings .section-heading h2 {
        font-size: 25px;
    }

    section.upcoming-meetings .section-heading-1 h2 {
        font-size: 25px;
    }

    section.upcoming-meetings .site-btn-boder-b {
        width: 80vw;
    }

    section.upcoming-meetings .service-item {
        margin-top: 0px !important;
    }

    .footer .bg-black .container {
        padding: 0px 20px;
    }

    .footer .container h2 {
        font-size: 25px !important;
    }

    .footer .bg-secondary-2 .container {
        padding: 0px 20px;
    }

    .footer .bg-secondary-2 .bottomsocial {
        margin: 0;
        margin-top: 13px !important;
        margin-left: 9px;
        text-align: left;
        padding: 0;
    }

    section#top .item-1 {
        margin-top: 0;
        height: 160px;
    }

    section#top .item-1 .caption-1 h1 {
        font-size: 20px !important;
        margin: 0px 0px 5px 0px !important;
        font-weight: 700 !important;
    }

    section#top .item-1 .caption-1 h6 {
        font-size: 14px !important;
    }

    section#top {
        padding-top: 0 !important;
        /* padding-bottom: 0!important; */
    }

    section {
        padding-top: 0 !important;
        padding-bottom: 0px !important;
    }

    img.timeline {
        margin-left: -120px !important;
        width: calc(100vw + 100px) !important;
    }

    section .section-heading h2 {
        font-size: 25px;
    }

    section .section-heading-1 h2 {
        font-size: 25px;
        position: relative;
        width: fit-content;
        margin: auto;
        margin-top: 25px;
        overflow: visible;
    }

    section .section-heading-1 h2:after {
        content: "•——————————";
        position: absolute;
        left: calc(100% + 10px);
        letter-spacing: -3px;
        white-space: nowrap;
    }

    section .section-heading-1 h2:before {
        content: "——————————•";
        position: absolute;
        right: calc(100% + 10px);
        letter-spacing: -3px;
        white-space: nowrap;
    }

    .bg-under {
        display: none;
    }

    .tm-media-body .tm-media-date {
        font-size: 22px;
        margin-top: 18px;
    }

    .tm-media-time {
        padding: 10px 6px;
        bottom: -13px;
        border-radius: 8px;
    }

    .container {
        margin-top: unset !important;
    }

    .breadcrumbs {
        font-size: 14px !important;
        letter-spacing: 0px !important;
    }

    .breadcrumbs a {
        font-size: 14px !important;
        letter-spacing: 0px !important;
        font-weight: normal;
    }

    .breadcrumbs .breadcrumb_last a {
        font-weight: bold;
    }

    .fb-comments.fb_iframe_widget.fb_iframe_widget_fluid_desktop.fb_iframe_widget_fluid > span {
        height: auto !important;
    }

    .fb-comments.fb_iframe_widget.fb_iframe_widget_fluid_desktop.fb_iframe_widget_fluid > span > iframe {
        height: 394px !important;
        overflow: auto;
    }

    .display-object {
        overflow: auto
    }

    .list-object-item {
        width: max-content;
    }

    .item-object img {
        height: 150px;
        width: auto;
    }

    .intro-content .container {
        margin-top: -20px !important;
    }

    .intro-content .thumb {
        padding-top: 0 !important;
        padding-bottom: 10px!important;
    }

    .organizational-structure .row {
        margin-top: 0 !important;
    }

    .year-navigation {
        margin-top: 20px !important;
        position: absolute;
        width: 120px;
        top: calc(100vw - 100px);
        right: 5px;
        z-index: 999;
    }

    .year-navigation .btn-active {
        display: none !important;
    }

    .intro-year {
        position: relative !important;
    }

    .intro-year #prebtn-mobile {
        position: absolute !important;
        top: 150px !important;
        left: 0 !important;
    }

    .intro-year #prebtn-mobile {
        position: absolute !important;
        top: 150px !important;
        right: 0 !important;
    }

    .our-courses {
        margin-top: 20px !important;
    }

    .our-courses-content {
        padding-top: 0 !important;
    }

    .tm-media {
        margin-bottom: 0;
    }

    .discovery-detail {
        margin-top: 20px;
    }

    .discovery-detail .down-content h3 {
        font-size: 18px;
    }

    .discovery-detail-thumb {
        padding: 10px 20px !important;
        width: 100% !important;
        margin-bottom: 50px !important;
    }

    .discovery-detail-thumb-time {
        position: absolute !important;
        width: 55% !important;
        bottom: -5px !important;
        background: #F5EEEA !important;
        border-radius: 5px !important;
        left: 24% !important;
        box-shadow: 0px 2px 20px 1px rgb(0 0 0 / 75%);
    }

    .discovery-detail-thumb-time > div > div {
        height: auto !important;
    }

    .discovery-detail-thumb-time .thumb-date {
        font-size: 12px !important;
        letter-spacing: 0.0em !important;
        line-height: 12px !important;
    }

    .discovery-detail-thumb-time .thumb-time h3 {
        font-size: 12px !important;
        letter-spacing: 0.0em !important;
        padding-bottom: 10px;
        padding: 2 !important;
    }

    .discovery-detail-thumb-time .thumb-time .thumb-time-clock {
        display: none !important;
    }

    .discovery-detail-courses .section-heading-1 h2 {
        font-size: 25px;
    }

    .discovery-detail-courses .content {
        display: flex;
        width: max-content;
        float: none;
        max-width: max-content;
        max-height: max-content;
        height: max-content;
    }

    .discovery-detail-courses .content-group {
        overflow: auto;
        padding: 0 !important;
        margin: 0 !important;
    }

    .discovery-detail-courses .content > a {
        width: 65vw !important;
        background: transparent;
    }

    .discovery-detail-courses .content > a > span {
        border: 14px solid white;
        box-shadow: 1px 10px 19px 0px rgba(0, 0, 0, 0.75);
    }

    .view-3d {
        position: absolute;
        padding: 4px 8px;
        background: #a95a38;
        border-top-right-radius: 4px;
        border-bottom-left-radius: 4px;
    }

    .view-3d:hover {
        box-shadow: -2px 3px 3px 0px rgb(0 0 0 / 75%);
    }

    .modal-3d-viewer {
        padding: 0;
    }

    .modal-3d-viewer > iframe {
        border: 0;
    }

    .modal-3d-viewer.show {
        display: block;
    }

    .modal-3d-viewer .close-modal {
        top: 0;
        border-radius: 0;
        padding: 10px 15px;
        right: 0;
        position: absolute;
    }

    .divsubcategory {
        margin-top: 20px !important;
    }
}