O'Reilly are offering two week offers.
Offer 1 to Jan. 23, 2013 at 23:59
This is for books by C.J.Date of database design http://shop.oreilly.com/category/deals/cj-date.do?code=WKCJDATE
Offer 2 is to Jan. 22, 2013 at 23:59
This is entitled "Build Web Pages that Run Fast and Look Great!" and is for books on CSS3!