The authors of this book created the CSS standard . This discussion is comprehensive and detailed. If you read this book, also read about the reality of CSS in existing browsers.
Apart site is excellent.
This book is useful if you are new to ER diagrams, new to a certain syntax, or want a concise ER reference guide at hand. National Geographic Field Guide to the Birds of North America by Jon L. Dunn Field guides are one of the best, and least discussed, examples of practical information design. Field guides need to be accurate, compact, portable, and helpful in the field. The National Geographic guide has been the standard field guide for North American birders for years. It is an outstanding example of excellent field guide design.