@media only screen and (min-width:768px) and (max-width:991px) {
    .main_menu .navbar-nav li a {
        font-size: 12px;
        padding: 15px 11px
    }
    .logo {
        float: none;
        text-align: center
    }
    .welcome-text div#clock,
    .welcome-text h2 {
        font-size: 30px
    }
    .welcome-text .home-arrow-down {
        bottom: -110px
    }
    .section-title>p {
        padding: 0
    }
    #navLogo,
    #navMenu {
        display: flex;
        justify-content: center;
        align-items: center
    }
}

@media only screen and (max-width:767px) {
    .navbar-toggle span.icon-bar {
        background: #fff
    }
    .navbar-toggle {
        margin-right: 0;
        margin-top: -30px
    }
    .navbar {
        min-height: 0
    }
    .main_menu .navbar-nav>li>a {
        border-bottom: 2px solid #121212
    }
    .section-title>p {
        padding: 0
    }
    .main_menu .navbar-nav li a {
        padding: 11px 15px
    }
    .navbar-toggle {
        margin-top: -34px
    }
    .navbar-collapse {
        background: rgba(0, 0, 0, .9);
        border-top: none
    }
    .welcome-text div#clock,
    .welcome-text h1 {
        color: #fff;
        font-size: 30px;
        font-weight: 900
    }
    .welcome-text .home-arrow-down {
        bottom: -130px
    }
    .social-media ul li a {
        height: 35px;
        line-height: 35px;
        width: 35px
    }
    .section-title h2 {
        font-size: 22px
    }
    .logo {
        display: flex;
        justify-content: center;
        align-items: center
    }
}

@media only screen and (max-width:480px) {
    h1 {
        font-size: 18px
    }
    h2 {
        font-size: 14px
    }
    h3 {
        font-size: 12px
    }
}