Back up your CSS and then open it in Notepad or suchlike.
Find the style and where you see the cursor in this image, remove whatever is in it.
Seems to work in a quick test. I suspect if you ever edit the style again, it might get rewritten so check that too.
See www.grainge.org for RoboHelp and Authoring tips
Thanks for the reply. I don't understand which image you refer to in your reply, however.
Thanks. I'm working on my styles problem at the moment. I'll get back to the list problem when I get this one solved.