@media all and (max-width: 480px) {
    .navbar-default .navbar-nav > .active > a{
        border-bottom: #000 dotted 1px;
    }
}

@media all and (min-width: 480px) and (max-width: 768px) {
    .hardware-main-content{
        margin-left: 0px !important;
    }
}