If you like to edit your css code, you should use css builder tool, specially made in the template css. You just need the css you want in the edit, such as body, header, sidebar, post, etc.. With css generator from metatitan, you no longer need to bother writing it manually. With a little creativity, css code you can make in a instant.
Example: I will make a body css, I use a template width 980px, black background, using the verdana, arial or helvetica fonts, and font 12px.
In the generator, you'll see the fonts, background, box properties, and position. The result as below :
Good luck !