Open the CSS file in a text editor. Specify the font size and family for the body of the Web page. For this example use:body{ font-family: Verdana, Arial, Helvetica, sans-serif; font-size: 14pt ...

Replace the value after "font-size:" with a font size expressed in pixels followed by a semicolon. For example, enter "font-size: 12px;" (without the quotations).