Thank you for your attention and your help! I really do appreciate it!
I use PhpStorm and node.js.
Can you please describe as simple as possible how to install globally PostCSS and Autoprefixer using terminal and configure PhpStorm's file watcher? I don't need to use gulp or webpack. I have a small project.
I tried different ways, but it doesn't work. PhpStorm generates a new .css file, but it doesn't contain prefixes.
I used https://github.com/postcss/postcss and https://github.com/postcss/autoprefixer
p.s. I tried to do it by myself for about several weeks...