How to use autoprefixer?

Question

css

There is a regular site, without CMS, how to use autoprefixer on it?
Give instructions for dummies on how to connect it, set it up and use it.

Answer 1

You can use this library js
leaverou.github.io/prefixfree
Or, as mentioned above - gulp + autoprefixer for it

Answer 2

npm install --global postcss-cli autoprefixer
postcss --use autoprefixer *.css -d build/

https://github.com/postcss/autoprefixer#cli