A lot of the neat features used in demo's like this (although I haven't checked ...

girvo on Oct 23, 2013 | parent | context | favorite | on: Pure CSS3 dancing Bender

A lot of the neat features used in demo's like this (although I haven't checked this ones code specifically yet) often rely on prefixed features and the like; it's more for showing what could be, rather than what is per se.