http://www.csszengarden.com/ http://www.csszengarden.com/ exists but many of the css files have been lost/removed. Based on the urls of the remaining files, the

http://www.csszengarden.com/ http://www.csszengarden.com/ exists but many of the css files have been lost/removed. Based on the urls of the remaining files, they are all from before May 2013, when older IE was a real concern and before flexbox was widely supported.