lol! I was trying to replace the first class with the second, instead of just adding it. I can be so thick sometimes. :)

That fixes my minor problem (thanks!!!), but I'm still lost about the second (how to round out the bottom corners). What I've done in the past is:
1. Duplicate the base style in css, then rename.
2. Rename my calling tag to match the duplicated style.
3. Then make changes to the new style, knowing it will not effect anything else.

Problem is that this style (set of styles) is a lot more complicated and harder for me to follow than those I've done before.

Thank you so much for the help! Must be tough to support templates, everybody has such different visions and skill levels!