I'm going to throw this at anyone that doubts the capabilities of HTML5/CSS3
While it's possible, the output reminds me of code/application generators of the past. That (hopefully) means that as technology progresses, we'll get better abstractions. And then the cycle will repeat itself. :)
Can you cite some examples of these generators you speak of?
Please throw it at the vast majority of mobile (smartphone) browser developers while you're at it.
Wow jaw drops. Will these animations work in Opera Mini?
(joke ;p)