@media screen and (max-width: 736px) {
    .mainNavBar .navbar-expand-md .navbar-nav .nav-link i {
        display: inline-block;
    }

    .user_identify {
        position: absolute;
        right: 5px;
        top: -6px;
    }

        .user_identify .dropdown-menu {
            position: absolute;
        }
}