carlosnader on "Font change and space between posts in Modularity Lite"

Hello, two questions about Modularity Lite:

1- I am trying to change some title fonts. I was able to change the blog title through Typekit but not the post title. I would like to change it to a sans serif font called poplar std. Typing h2 at the selector box doesn't work. Would that be possible through CSS editing?

2 - I also want to increase the spaces between posts in about one inch. What would be the code for that.

Thanks