default font.

[krissi]

I'm tinkering with my community's layout and I'm wondering if there is anyway to force a default font in a layout? Meaning, even if users decide to use obnoxious font it would still show up as the normal font on the main page and only by looking at the actual entry would you see the font they actually used.
I have done this on my S1 journal and I swear I used to have a css code for it but it escapes me right now. Any help is very much appreciated!