Fixed Position Items

Hi, I’m a newbie to Webflow.
I have a menu button which I wish to be in a fixed position vertically ( so that items scroll under it ) but relative to a container when desktop browser is resized horizontally.
Any help would be much appreciated.


Here is my site Read-Only: LINK
(how to share your site Read-Only link)

the links in your question is broken

No worries, I just figured it out, thanks for looking though