Thanks for the replies, guys. This is all new to me, since I am quite a beginner with CSS. Reading the above, I Googled:
"box model" IE "Internet explorer"and the top two articles are quite helpful.
This issue is even documented in
Wikipedia: The IE Box Model bug.
The article by Roger Johansson,
Internet Explorer and the CSS box model is one I am going to study to see if I can resolve the differences.
