@media only screen and (max-width: 600px) {
    .row.menu {
      display: none;
    }
    .col-menu {
        display: none;
    }
    .header-menu {
        display: none;
    }
    .landen-menu {
        display: none;
    }
    .navbar-nav {
        display: none;
    }
    .mobile-menu {
        display: block;
        float: right;
        font-size: 25px;
    }


    .overlay a {font-size: 20px}
    .overlay .closebtn {
        font-size: 40px;
        top: 15px;
        right: 35px;
    }


}