References
Shortened URLs are numbered sequentially; the related long URLs are listed below for reference.
Chapter 1
1 http://alistapart.com/article/tohell
2 http://www.w3.org/TR/css3-roadmap/#whymods
3 http://alistapart.com/article/prefix-or-posthack
4 http://www.chromium.org/blink#vendor-prefixes
Chapter 2
5 http://www.w3.org/TR/css3-transitions/
6 http://www.opera.com/docs/specs/presto23/css/transitions/
7 https://developer.mozilla.org/en-US/docs/Web/Guide/CSS/Using_CSS_transitions
8 http://www.w3.org/TR/css3-transitions/#properties-from-css-
9 http://trentwalton.com/2010/03/22/CSS3-in-transition/
Chapter 4
10 http://www.w3.org/TR/css-transforms-1/
11 http://www.w3.org/TR/css3-transforms/#transform-origin
Chapter 5
12 http://www.w3.org/TR/css3-background/
13 http://en.wikipedia.org/wiki/Parallax_scrolling
14 http://blog.teamtreehouse.com/how-to-recreate-silverbacks-parallax-effect
15 http://www.456bereastreet.com/archive/200601/css_3_selectors_explained/
16 http://www.quirksmode.org/css/contents.html
17 http://msdn.microsoft.com/en-us/library/cc351024%28VS.85%29.aspx
Chapter 6
18 http://www.westciv.com/tools/gradients/index-moz.html
19 http://snook.ca/archives/html_and_css/multiple-bg-css-gradients
20 http://www.w3.org/TR/css3-animations/
Chapter 7
21 http://www.w3.org/TR/css3-multicol
22 http://dev.w3.org/csswg/css-grid/
23 http://jakearchibald.com/2014/dont-use-flexbox-for-page-layout/
24 http://www.w3.org/TR/css-flexbox-1/
25 http://css-tricks.com/snippets/css/a-guide-to-flexbox/
26 http://www.w3.org/TR/css3-flexbox/#box-model
27 http://www.smashingmagazine.com/2013/05/22/centering-elements-with-flexbox/