How do I ensure all Wordpress headers have a transparent background?

[g4rf0x]

Now that I have my repeating background within the #main-content portion of styles.css, I want to ensure that all headings (with the exception of a few 'button-like-elements') have a transparent background. The problem is that I can't exactly figure out where I'd do that.To illustrate my issue, I will focus on two pages:[*]Homepage : The titles "Core Subjects" and "Recent Posts" both have a white background.[*]Blog Post : Everything looks fine until you get to the comments. "3 Comments" and "Leave a Reply" have the same problem.Please let me know if I have omitted some necessary data, and thank in advance to you scripting-angel(s).