What differences, if any, are there in the following examples: 1) list-style: none; & list-style-type: none; EX: http://www.maxdesign.com.au/presentation/listutorial/horizontal02.htm 2) margin: 0px; & margin: 0; 3) background: #ccc; & background-color: #ccc; I am beginning to think these may be personal choice or a shorthand. I have tried all in several situations but have been unable to nail this down. TIA, Brian