hum.. un bel dilemma!
https://docs.google.com/presentation/d/19R_E5B__kdE55L1bTpS6IFKbYbHq-PQKKky4do5Yc6A/present#slide=id.ge7672e82_064
http://www.html5rocks.com/en/tutorials/speed/high-performance-animations/
NICE DODDLE:
http://thecodeplayer.com/walkthrough/google-doodle-animation-in-css3-without-javascript