To anyone having problems with Exercise 16 of the Markdown course:
What you are supposed to do is modify the "Trick to do" code so it looks like the "Expected HTML Output". I found the solution in this old thread.
tl;dr: Change "Trick to do" code to
<div>I am a <div> !</div>
EDIT: FOUND A WAY TO BEAT N.15
Sorry about the caps, I'm excited! Replace one of the slashes in
/, that way the url won't change to HTTPS!