Updated some stylistic things and added room for captions

This reverts commit 236a5d27.

Copied from website-old
Needs to be merged with the things Jen was doing

Website is now forked from the master teaching website I'm using in
all my courses, and up to date with the latest version of the
CSE340 website

https://gitlab.cs.washington.edu/cse340/website/-/merge_requests/49/diffs

Added a title, description, etc. Some details missing since I don't
have a course number (for example). Now it's ready to work on a schedule :)

with simplified text and removal of
most cse340 specific information