Nav bar item Highlights using (solved by using links from BSHomepage not Quick Add)

Hi, I have 3 sections on my page each with an ID of Sect1…3. There is a navbar with and option for each Section.

I’ve been trying to the correct Navbar option to be highlighted as depending on where the user is on the page. I’ve been following the BS4 docs but I’m running out of ideas.

Would be greatful for any help:

I removed the Quick Add links to Bootstrap4 and instead pasted in the links found on the Bootstrap4 site.