@media (max-width:768px) {
    .elementor-nav-menu--dropdown .sub-menu.open {
        left: 0
    }
    .elementor-nav-menu--dropdown .sub-menu li.back-button {
        display: block;
        font-weight: 700;
        padding: 15px 20px;
        background: #f3f3f3;
        border-bottom: 1px solid #ddd;
        cursor: pointer
    }
}