If you like to organize your CSS rules by what elements they affect, the following template mught be a good idea. Whenever you want to find a section just look for its name preceded by two dashes.
/* –Header —————*/
/* –Structure —————*/
/* –Nav —————*/
/* –Search —————*/
/* –Headings —————*/
/* –Lists —————*/
/* –Forms —————*/
/* –Links —————*/
/* –Misc —————*/