I made a short version of your existing code
I think some things are missing in your JS versions
I threw something out
something is unnecessary and most use external JS (CDN)
so you edit and download JS as needed ( locally )
and instead of the absolute paths from my code
make it (later) relative when you make your website/files
download this html file and run locally
and then use it (as help) to edit your code on the website
Bootstrap Ed Examples.html (1.7 KB)