Hamburger Menu with Sage 8.5 or Sage 9

I’m looking over the top list of posts here and have done some searching around the discussion boards as well, but I don’t see much on this topic.

I’d like a responsive menu which works like the classic hamburger menu. I think that the intention now is for me to write my own, but that seems like, a lot of…work.

Is there not something which is already lying around that I could borrow from for this? Everything I’ve found so far is from 2015 at best, and seems to deal with older versions of Sage and Bootstrap.

Having thought it through a little more I realize it may only be 4 or 5 additional lines of code which I’ll need to write to make this work, but maybe more. I guess I’ll give that a go, because there’s really no guidance out there. Anyone else in this situation?

Which version of Sage should I start with if I’m writing this on my own?

I’m going to run through what looks to be the best option right now and let everybody know how it goes. This is the solution from 2015 discussed over here How to restore the Bootstrap nav [walkthrough].