Top Menü - link button fixed

Hello, thank you for your help so far.
I would now like that in the "top menu" when clicking on a link button, it remains fixed. I don't want it to jump back to the home button.
Can you help me?
You can access my site at "test.brandt-uwe.de". Dankeschön!

Hello,

Sorry but I don't understand this. Can you describe this in more details?

Thanks,
Milos

I have made a mistake. When I link the button to a page it works as it should.
sorry!