@media (max-width: 991px) {
    .bars {
        display: inline-block;
        color: #333;
        cursor: pointer;
    }

    body.mobile-nav-open .nav{
        display: block;
    }

    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        width: 100%;
        background: #fff;
        overflow-y: scroll;
        max-height: calc(100% - 72px);
        display: none;
        z-index: 9999;
        border-top: 1px solid #f3f3f3;
    }

    .nav li {
        display: block !important;
    }

    .nav li.has-sub:hover > ul {
        display: none;
    }

    .nav ul {
        width: 100%;
        position: relative !important;
        border-radius: 0 !important;
        box-shadow: none !important;
        left: 0 !important;
    }

    .nav a {
        justify-content: space-between;
        border-radius: 0 !important;
        padding: 10px 20px !important;
    }

    .nav li.has-sub ul a {
    }

    .nav li.has-sub ul a {
        border-left: 16px solid transparent;
    }

    .nav li.has-sub .has-sub ul a {
        border-left: 32px solid transparent;
    }

    .nav > ul > li, .nav > ul > li:hover {
        border-bottom: 0;
    }

    .nav li:hover > a {
        color: #fff !important;
        background-color: #604083;
    }

    .nav .arrow {
        display: none;
    }

    .nav .plus {
        display: block;
        font-size: 20px;
    }




    .logo{
        padding-left: 50px;
    }

    .dat-lich .form {
        width: 50%;
    }
}

@media (max-width: 767px) {
    .thong-diep{
        /*padding: 2em 0;*/
    }
    .dat-lich {
        display: block;
    }
    .dat-lich .form{
        width: 100%;
    }
    .about .ccth .bg {
        min-height: 300px;
    }
    .medal {
        flex-wrap: wrap;
    }
    .medal .item{
        width: 33.3333%;
    }
    .medal .item.mb-w50{
        width: 50%;
    }
    .chung-nhan .item{
        margin-bottom: 1em;
    }
    .section-3 .box-1{
        min-height: 400px;
    }
    .section-3 .box-3{
        min-height: 450px;
    }
    .contact .bg{
        min-height: 400px;
        margin-top: 1em;
    }
}
@media (max-width: 400px) {
    .site-header .hotline a {
        padding: 5px 10px;
    }

}