$ sudo npm install postcss-pxtorem
$ sudo npm install -g postcss-pxtorem

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

$ sudo npm update postcss-pxtorem

Update package globally,

$ npm install -g postcss-pxtorem

Git clone:

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

$ sudo  npm install -g ./postcss-pxtorem

postcss-pxtorem@4.0.1 /usr/lib/node_modules/postcss-pxtorem

How to remove postcss-pxtorem package :

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

$ sudo npm uninstall postcss-pxtorem

Basic Information of postcss-pxtorem NPM Package: