25 Feb 11
12 Aug 13 9:35 am
Heading tags are usually in bold letters because they are either main headings or sub-headings of the article/webpage.
If you'r using Affilotheme, you can go to Affilotheme > Design and Layout > Colors and Fonts. You can set how the Heading fonts would look there.
If you're within the Post or Page Editor, you can customize the look of the heading tag within there too. You can use the TinyMCS plugin.
Hope that helps. Have a good day!