# 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. Novice · CSS · HTML · Web Development · Updated November 3, 2026 ## After this lesson you can - Explain what Bootstrap is, and add it to a page from a CDN ## Key takeaways - Bootstrap is a free CSS framework: add its stylesheet to a page, then put its class names on your elements to style them. - Load Bootstrap's CSS with a `` in the `head`. Its ` ``` - The `` in the `head` loads Bootstrap's CSS: all the styles. - The `