@media only screen and (max-device-width: 770px) {

    #image-top-1, #nav-normal, #image-top-2 {
        display: none;
    }

    .navbar-brand {
        margin: 0px;
        padding: 0px;
        width: 90%;
        height: auto;
    }

    .navbar-toggle, .collapsed {
        margin: 0px;
        position: inherit;
        padding: 0px;
    }

    .navbar-toggle {
        margin-top: -10px;
        margin-right: 20px;
        padding: 5px;
    }
}