@media screen and (max-width: 360px) {
    .txt {
        font-size: 14px;
        padding-left: 10px;
    }
}

/* On smaller screens, where height is less than 450px, change the style of the sidenav (less padding and a smaller font size) */
@media screen and (max-height: 450px) {
    .sidenav {
        padding-top: 0;
    }

        .sidenav a {
        }
}

@media screen and (max-width: 450px) {
    .sidenav {
        width: 0;
        /*padding-top: 15px;*/
    }

    .main-student {
        margin-left: 0;
    }
}

@media screen and (min-width: 720px) {
    .main-lesson {
        margin-left: 250px;
    }

    .mySidenav-lesson {
        width: 250px;
    }
}


/*responsive page chi tiet khoa hoc*/
@media(min-width: 992px) {
    .nav-mobile {
        display: none;
    }
}

@media (max-width: 767px) {
    .div-baihoc{
        overflow-y:auto;
        width: 100%;
        display:none;
    }
    .div-baihoc::-webkit-scrollbar-track
    {
        -webkit-box-shadow: inset 0 0 6px rgba(0,0,0,0.3);
        background-color: #F5F5F5;
    }

    .div-baihoc::-webkit-scrollbar
    {
        width: 4px;
        background-color: red;
    }

    .div-baihoc::-webkit-scrollbar-thumb
    {
        background-color: red;
    }

    #mySidenav-lesson {
        display: block;
        width: 100%;
        height: auto;
        top: 0;
        left: 0;
        right: 0;
        z-index: 999999;
    }

    .detail-lesson-video {
        display: block;
        width: 100%;
    }

    .sidenav {
        position: unset;
    }

    .main-lesson {
        margin-left: 0px;
    }

    .navbar {
        padding: 5px 10px !important;
    }
    .sidenav{width:100%;}
    .sidenav a.menu-toggle {
        line-height: 50px;
        cursor: pointer;
        height: 50px;
    }

    .sidenav a {
        padding: 8px 10px;
    }

    .detail-lesson-video-content {
        padding: 0 10px;
        padding-top: 50px;
    }

    .list-lesson-tab {
        padding: 0 10px !important;
    }

    .nav-pc {
        display: none;
    }

    .navbar-brand {
        padding: 0px !important;
    }

    .main-student{width:100% !important; margin-left:0 !important;}
    .content-courses-list .item_video{margin-bottom:30px;}
}

.navbar-brand {
    padding: 0px !important;
}

.list-lesson-tab-head .tabs li:hover:after {
    width: 0;
}

.navbar {
    padding-bottom: 15px;
    padding-top: 5px;
    padding-left: 10px;
    padding-right: 10px;
}

nav.navbar.navbar-light.bg-light.nav-pc .mobilehome {
    position: absolute;
    right: 30px;
    line-height: 50px;
}

.list-lesson-tab {
    padding: 0 0.5rem;
}

.list-lesson-tab-head .tabs li {
    font-size: 17px;
}

.list-lesson-content-tab {
    margin-top: 10px;
}
.list-lesson-content-tab .sub-detail-content img,.list-lesson-content-tab .sub-detail-content ifame{
    max-width:100%;
    height:auto !important;
    font-size:14px;
    color:#333;
}

.sub-detail-contentv span {
    font-size: 16px !important;
}

.detail-lesson-video-head {
    font-weight: 700;
}
.fb-message {
    position: fixed;
    bottom: 15px;
    right: 15px;
    display: block !important;
    visibility: visible;
    z-index: 999999999;
    background: #007bff;
    border-radius: 50%;
    padding: 2px;
}

@media screen and (min-width:992px){
    .div-baihoc{display:block !important;}
}
@media screen and (min-width:768px) {
    .pdp-mod-cart-concern{display:none !important;}
    .fix_social{display: none!important;}
}
@media screen and (max-width:767px) {
    .pdp-mod-cart-concern{/*display:block !important;*/}
    .fix_social{display:none !important;}
}
@media screen and (max-width: 767px)  {
     #header .hotline, #header .sosial {
    display: none;
}
.igi_slogan_header.text-center{
    width: 80%;
}
#header .img-fluid {
    max-width: 60px;
    height: 60px;
}
.text_h2.text-uppercase {
    margin-left: 35px!important;
    font-size: 22px;
}
.igi_slogan_header.text-center {
    padding-top: 25px!important;
}
}
@media screen and (max-width: 992px)  {
     .text_h2.text-uppercase {
    color: red;
    font-size: 24px;
    margin-bottom: 0;
    margin-left: 15px;
}
}

.lession-detail-content{max-width:1000px; margin:auto auto;}
.lession-detail-content *{max-width:100% !important;}