Nice! I too like the idea of having a tiny module that does only this, rather than using a big library like Bootstrap or the LESS equivalent of Compass. I added

Nice! I too like the idea of having a tiny module that does only this, rather than using a big library like Bootstrap or the LESS equivalent of Compass. I added a pull request that puts the Opera prefixes into a separate file since it has a small market share. It's like the webkit-only version, only less minimalistic, and is closer to what someone who writes their own CSS might do.