Place navbar under jumbotron and fixed at the top when scrolling

1

I’d like the jumbotron to be above the navbar, but for the navbar to stay fixed at the top of the screen when scrolling down. For the life of me, I can’t figure it out. Any advice? Please see my code below: https://codepen.io/RDC2020/pen/ybWvBL

2

looks like you need to add Bootstrap’s JS file

3

Thanks, I think I have added it at the bottom of the page and JS pane but to no avail.