CSS can sometimes be a little tricky because of its cascading effect. So a change to your CSS from Target might be getting overridden by other CSS on the page sometimes. I've found 2 useful ways to overcome this:
Get more specific with your CSS selector. Instead of just using the class (.example) try something like: div.content > div.example.
Try using the "!important" identifier on your CSS statements. It will look like this:
Thanks so much for your advice. Unfortunately even if I make the changes in inspector, and copy over the exact specific selector, code and changes over to Target, the changes still don't show in Target - even when I add important.