css的使用技巧资料

http://www.instantshift.com/2010/03/15/47-css-tips-tricks-to-take-your-site-to-the-next-level/

http://www.cnblogs.com/youxin/archive/2011/10/30/2229251.html

http://www.cnblogs.com/Qzhou/archive/2013/04/29/3050373.html