Cederholm clearly explains the CSS techniques required to build a "bulletproof" website: one that is robust in the face of text resizing, window resizing, disabled images, etc, with minimal, semantically correct markup that works across all the major browsers.
Anyone who’s serious about building a modern website should read this book.
Cederholm builds up his examples, one step at a time, in a clear manner. For the shorter examples, he tends to show the entire CSS or XHTML again and again, with the latest changes highlighted in orange. I would have preferred him to strip out the unneccessary repetitive material. Otherwise, great book.