.nav-sidebar .nav-item .dropdown_nav .nav-item[class] .dropdown_nav {
    display: none !important;
    transition: initial;
}

.nav-sidebar .nav-item .dropdown_nav .nav-item[class] .dropdown_nav.active {
    display: block !important;
}

.nav-sidebar .nav-item .dropdown_nav .nav-item[class] .dropdown_nav.hidden {
    display: none !important;
}