I want to learn how to adjust the font type and size on the default text

The default language:

Our schedule for September 2013

Click a free day to apply for an appointment.

Is showing up in a text size and font that does not fit in with my site. I would like to be able to adjust that font type and size but I cannot seem to get it to work.

The site where you can view the issue is:
http://myohiodivorcelawyer.com/schedule-a-free-consultation/