Each pattern works reliably in all major browsers without the need for browser hacks.
The book's layout, with a pattern's example on the left page and its explanation on the right, makes it easy to find a pattern and study it without having to flip between pages. The book is also readable from cover to cover, with topics building carefully upon previous topics.
A software developer can use this book to learn CSS for the first time. A designer familiar with CSS can use this book to master CSS and XHTML. If you are completely new to coding or completely new to CSS and XHTML, you may want to read an introductory book on CSS and XHTML first.
You can interact with all the examples in the book at www.cssDesignPatterns.com.