$ sudo npm install postcss-css-variables
$ sudo npm install -g postcss-css-variables

If want to update the postcss-css-variables package execute the command as below,

$ sudo npm update postcss-css-variables

Update package globally,

$ npm install -g postcss-css-variables

Git clone:

$ sudo  git clone https://github.com/rektide/postcss-css-variables.git

$ sudo  npm install -g ./postcss-css-variables

postcss-css-variables@0.8.0 /usr/lib/node_modules/postcss-css-variables

How to remove postcss-css-variables package :

You can uninstall or remove this package from your node_modules run the command as below,

$ sudo npm uninstall postcss-css-variables

Basic Information of postcss-css-variables NPM Package: