Yesterday while answering a lot of issues many of you had with "spacing," "padding," etc. It became clear to me that 90% percent of the problems can be self fixed by using Firebug or Google Chrome's Console tool. I wrote an article with pictures on how to use Chrome's console to manipulate your CSS issues before comitting the changes to your style.css file.
I used to use Firebug but do not anymore. If someone else has a tutorial for using Firebug feel free to share.
The instructions I wrote for using the console tool, is exactly the same steps I took to help troubleshoot many of your issues yesterday and today.