Hello,
I checked the community via searcj function now for a while, but can`t find a proper hint for my issue.
Allow this question, please:

Fixed-to-top navbar.
No problem at all.

Now, once the Navbar hits the top of the screen, a new navbar appears and replaces the old one, with a slightly different design, or in my case just with an additional logo in one edge.
Maybe I need a script that replaces navbar, once it hits the top of the screen?
I have no idea whether my idea is feasible to establish with Xara.
Any ideas?
I found an example in the internet, which generally shows what I mean (means, the effect is what I am targeting, the content is different for sure)
http://displaymanufaktur.de

I am using XDP12