Master Page Body Element Properties
I spend a long time trying to figure out why I kept getting an error when adding the leftmargin parameter to the Body element as described on Page 40.
The error I got stated: "Validation (XHTML 1.0 Transitional): Attribute 'leftmargin' is not a valid attribute of element body".
Finally I noticed the XHTML 1.0 Transitional setting on the toolbar. When I compared it with the picture in the book I noticed the book shows Internet Explorer 6.0. After changing this selection the Error goes away.