Display the sub menu items of the current page

Hello,

I need a little help.
Yigit had helped me with a part of the problem. However, there is one more request :-)

Namely, it comes:
If you click on one point of navigation in the site navigation For Example on “systems of sanitation” will open the sub-menu and stops. In the code above, the navigation points disappear.

With this code of Yigit it has already worked, that the 1st level of the left Navigaion remains visible:

ul#menu-abwasser li.current-menu-item>.sub-menu {
  display: block!important;
}

What to like to want:
The 2nd and 3rd level of navigation should remain visible in the active state.

It’s about this website: http://www.kmb-bensheim.de/
Here it works on, that the menu remains: http://www.kmb-bensheim.de/anlagen-der-abwasserentsorgung/
Here, unfortunately, not yet: http://www.kmb-bensheim.de/gruppenklaeranlage-bensheim/

I thank you for the help :-)

Best Regards
Lorbeer Design

• This topic was modified 9 years, 6 months ago by LorbeerDesign.