You hate writing vendor prefixes for all browsers? Just let CSSPrefixer do it for you!
See it in action:
keep your styles clean
easy_install cssutils (or
pip install cssutils if you have pip)
cssprefixer my1.css my2.css --minify > result.css
import cssprefixer cssprefixer.process(open('my.css').read(), debug=False, minify=True)
With Django or Flaskor any other Python web framework — webassets has a filter for cssprefixer.
Looking for a client-side solution? Try -prefix-free by Lea Verou.