Portfolio Project / Bootstrap NavBar Help?

Just starting the Portfolio Project in CodePen - I’ve tried taking Bootstrap NavBar examples from multiple different sources to tweak - but I can’t get any of them to work as demonstrated from source, even before I change anything. I’d love just a basic NavBar / inversed in color, but don’t understand what’s going on. It’s weird because I also used a jumbotron example from a source, and that worked immediately. Any help appreciated!

@jessmadethis I cant tell you exactly why it is but I ran into this same problem and it has something to do with bootstrap 4, which is the newer version of Bootstrap. Switching your Bootstrap to use 3.3.7 fixes this. I tested it for you and it worked.

Use this this: https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"

Thank you! It completely worked. Appreciate it - now I can keep using my day off to learn!