# What is Bootstrap?

Bootstrap is a free CSS framework of ready-made styles and components; add it to a page with two lines from a CDN and start using its classes.

![Cheat sheet: What is Bootstrap?](https://fsdtrainingmedia.blob.core.windows.net/public/images/2026/11/1a9643371fce4ab58ace9a0ef6b732d7.webp)

- Category: CSS
- Level: Novice
- Tags: Bootstrap, Content Delivery Network (CDN), CSS, html, Responsive design, web-development
- Updated: November 3, 2026

Source: https://www.ask-codey.com/cheat-sheets/bootstrap-what-is-bootstrap-cheat-sheet