Yay! I'm glad I helped.
To make it even easier on you try out https://stackedit.io/editor or https://hackmd.io/ . They are IN browser Markdown editors that are pretty easy to use, can connect to Google Drive and store in the browser for easy grabbing. Plus, if something's not working on Steemit.com you can always copy/paste into one of those and see what it looks like.
I also do this at busy.org. 😃
AND if you use the Chrome Browser there's an extension that makes the editor show up to the right when you're creating a post. So that's cool.
Regarding font: Nopers. Markdown is simplified (structure only) version of HTML. Though if you know HTML, you can combine the two whenever you want. Here's a link I found that very concisely explains it. You may be able to get it to work... In fact, I may try it out too. 🙃
https://pairlist6.pair.net/pipermail/markdown-discuss/2015-March/003310.html
Thanks for stopping by!
Thanks, I will check out those links and have a play around. :)