Text formatiing in Fixer theme

Hi,

I am having trouble with the formatting of the Fixer theme through Upfront. I keep chaining the text on this page (www.tasawwur.org/home) to heading 2, and it shows as such while i'm in the editor, but the moment i save and quit, it goes back to being a default body font. Can someone help with how to get the preformatted fonts to stick?

Thanks
Aditi