Purgecss – Easily remove unused CSS

This is neat. Few other tools that do the same job:

- PurifyCSS https://github.com/purifycss/purifycss

- Google Chrome dev tools https://www.labnol.org/internet/remove-unused-css/28635/

- Firefox https://developer.mozilla.org/en-US/docs/Tools/CSS_Coverage

- Penthouse a critical path CSS generator https://github.com/pocketjoso/penthouse

- uncss https://www.npmjs.com/package/uncss