@media only screen and (max-width: 767px){
    body{
        overflow-x: hidden;
    }
    .menu-section{
        display: none;
    }
    .mobile-menu-section{
        display: block;
    }
    .vidoe-heading {
        font-size: 14px;
        padding: 5px;
    }
    .admin-person-img img {
        max-width: 130px;
    }
    .notice-section {
        background: url(../img/bg_notice_board.png);
        height: auto;
        background-repeat: no-repeat;
        padding: 10px 0 20px 120px;
        background-color: #F2F2F2;
        margin-top: 20px;
        border: 1px solid #ccc;
        padding: 10px;
    }
    .main-slider.owl-loaded.owl-drag {
        margin-bottom: 15px;
    }
    .principal a img {
        height: 179px;
        width: 100%;
    }
    .footer-right {
        float: left;
        padding-left: 30px;
    }
}