Overview Official Website

Quickly design and customize responsive mobile-first sites with Bootstrap, the world’s most popular front-end open-source toolkit, featuring Sass variables and mixins, a responsive grid system, extensive prebuilt components, and powerful JavaScript plugins.

It is a required plugin. You can't remove this.
Usage
We've used bootstrap-based components.
Add Package
yarn add bootstrap --save
Remove Package
yarn remove bootstrap ( you can remove package by removing specific package from package.json )
Β© Skote.