.header-dark #header-nav {
    background: #000 !important;
}
#header-nav {
    transition: 0.25s;
}
#header-nav.active .dropdown-toggle {
    background: #000;
    padding: 20px 25px 20px 0px;
}
#header-nav .nav-logo {
    transition: 0.25s;
}
#header-nav.active .nav-logo {
    width: 120px;
}
#header-nav .dropdown-toggle, 
#header-nav .nav-menu-dropdown {
    transition: 0.25s;
}
#header-nav.active .nav-menu-dropdown {

}