I purchased CSS editor to make a few simple changes to http://www.niallmcgann.wordpress.com All I want to do is change header size and change some fonts. First I tried pasting the existing stylesheet in to the editor and making changes there. I then pressed preview - nothing changed. I then saved the stylesheet and previewed again - nothing changed. So after some more reading up here, I tried to create my own rule change by copying just the section of the stylesheet that I needed and amending that. I tried to see a preview and saved the stylesheet again to see if I could see the preview - nothing changed.
Am I just not getting this or what are the exact steps needed to preview changes??