How does one learn to make sites like these (particularly the "see work" link)?

The "See work" link it's trivial for anyone with their fair share of CSS. The projects inside their works are what look really awesome and complex.

To see more demos like that button, I highly recommend Tympanus/Codrops: http://tympanus.net/Tutorials/CSSMaskTransition/ (keep clicking on the arrow to see them all).

Tympanus/Codrops is such an amazing resource to learn and use stuff from there. Glad to know people know about this site.

I have a small facebook group with a couple of friends where we used to post css stuff and half of the links are from there. I/we just love that site

I know, right? seems to be a group of highly skilled people, for sure.

I assume they have a very good match between good front-end engineers, webgl and designers to make these kind of magic happen.

> a buttery smooth animation engine.

Looks great, would love to know how it works.