@media screen and (min-width: 768px) {
    footer {
        text-align: none;
    }

    .cta a.btn-default {
        float: right;
    }

    .cta h2 {
        text-align: left;
    }

    .features .item {
        margin-bottom: 0;
    }

    .navbar-nav {
        margin: 10px;
    }

    .footer_left, .footer_center, .footer_right {
        display: inline-block;
        vertical-align: top;
    }

    .footer_center {
        padding: 5px;
    }

    .footer_left {
        float: left;
    }

    .footer_right {
        float: right;
    }

    .teachers .item {
        margin: 0;
    }

    .testimonials .container_item {
        border-left: solid 1px #e0e0e0;
    }

    .testimonials .item-testimonial:after,
    .testimonials .item-testimonial:before {
        right: 100%;
        top: 50%;
        border: solid transparent;
        content: " ";
        height: 0;
        width: 0;
        position: absolute;
        pointer-events: none;
    }

    .testimonials .item-testimonial:after {
        border-color: rgba(136, 183, 213, 0);
        border-right-color: #fff;
        border-width: 15px;
        margin-top: -35px;
    }

    .testimonials .item-testimonial:before {
        border-color: rgba(194, 225, 245, 0);
        border-right-color: #e9eef2;
        border-width: 16px;
        margin-top: -36px;
    }

    .top-bar .social-media {
        text-align: left;
    }

    .top-bar p {
        display: inline-block;
        margin: 0;
    }

    .top-bar .data-info {
        text-align: right;
    }

    .scrollup {
        width: 50px;
        height: 50px;
        position: fixed;
        bottom: 80px;
        right: 30px;
        display: none;
        background: transparent url("../img/to-top.png") center center no-repeat;
    }

    .scrollup i {
        color: #fff;
        text-align: center;
        display: block;
        line-height: 48px;
        font-size: 20px;
    }

    .scrollup:hover {
        opacity: 0.7;
    }

    .video_fullscreen {
        display: block;
        height: 400px;
        z-index: 999;
    }
}

@media screen and (min-width: 768px) and (max-width: 900px) {
    .navbar-default .navbar-nav > li > a {
        margin-right: 5px;
        margin-left: 5px;
        padding-right: 0;
        padding-left: 0;
    }

    .btn-default {
        display: block;
        font-size: 14px;
        padding: 10px 0;
    }
}