Originally Posted by grannyGrumpy
And before I know it, I have a dozen styles with one-time use. (well, not all for top margins, but just in general). Any advice for that scenario?
Make classes for common scenarios (top margins, left margins, italics, etc...) and then stack them with other classes as necessary (elements can have more than one class). Or make judicious use of the '+' CSS operator to handle special situations rather than creating a ton of classes that only get used once.