Review added March 2000. The authors of this book created the CSS standard . This discussion is comprehensive and detailed. Review added January 2001. If you read this book, also read about the reality of CSS in existing browsers.
Apart site is excellent.
This book never talks about the Web, but it has more useful insights for a Web designer than most Web books. Understanding Comics explores and explains how time, space, transitions, and closure function in comics. It is striking how this discussion also applies to how people use the Web. If you are a Web designer, this book can improve your work. Read Scott McCloud's online column for a taste of his work.