@media (max-width: 1199px) {
    .desktop_logo,
    .desktop_logo + br
    {
        display: none;
    }

    .ajax-mobile-header-wrapper {

        -webkit-transition: opacity 0.3s ease 0s;
        -moz-transition: opacity 0.3s ease 0s;
        -o-transition: opacity 0.3s ease 0s;
        transition: opacity 0.3s ease 0s;

        display: block !important;
        position: fixed;
        top:0;
        z-index:1000;
        opacity: 0;
    }
}