CSS Book

I have been away for a couple of days. While on kind of short vacation I have find and buy very nice book "CSS Mastery". Well ... I thought that I have decent knowledge of CSS but after just a couple of pages of this book I find out that there is so many holes in my CSS knowledge. (I'm designing in CSS for let say year and a half.) My advice for everyone who is using CSS to design web pages is to read this book. There is so many useful advices and a lot of good examples so I think reading this book will help to everyone no matter if they are beginners or advanced CSS web designers.