How to increase font size of member name in post profile only

Hi Folks,

Me again. Just wondering how to do this or where I would look to increase the size of the font of the member's name in post profile only... the members' name UNDER their avatar.

Thanks so much for any help.

Code:

.postprofile dt {line-height: 1.4em; font-size: 1.1em;}

Adjust the em values to whatever looks best to you.

Thank you Werefree, you're awesome and so good with these codes.

I never did figure out that firefox add-on or maybe it was because I was using the latest version of Firefox. Anyway, thanks again.