Drupal Themes

I recommend searching the web for some fine tutorials. Here is a customized summary, with data that was key to me, understanding style sheets used by Drupal themes.

1) CSS entry have the format:
Select { Declarations }
with Declarations containing one or more: Property: Value

Here is an executive summary of this feature using phptemplate.

1) In the file \themes\engines\phptemplate\phptemplate.engine
Find the function function phptemplate_regions().

It looks like this: