What is Bootstrap 5?

What is Bootstrap 5?

Bootstrap 5 is the newest version of Bootstrap, the most popular HTML, CSS, and JavaScript framework for building responsive, mobile-first websites.

Bootstrap 5 is completely free to download and use!

What does Bootstrap give you?

Instead of writing every style from scratch, Bootstrap gives you ready-made building blocks:

• Layout classes for grids and containers
• Pre-styled components like buttons, cards, navbars, and modals
• Utility classes for spacing, colors, text, and flex
• JavaScript plugins for things like dropdowns, carousels, and tooltips

Mobile first

Bootstrap 5 is built mobile first. The CSS is designed for small screens first, and then scales up to larger screens using media queries. You add classes for small screens, then override for big ones.

No jQuery

The biggest change from Bootstrap 3 and 4 is that Bootstrap 5 switched from jQuery to plain JavaScript. Everything is lighter and faster.

Browser support

Bootstrap 5 supports the latest, stable releases of all major browsers and platforms. However, Internet Explorer 11 and down is not supported.

TL;DR

• Bootstrap 5 is a free HTML, CSS, and JS framework.
• It makes responsive, mobile-first sites fast to build.
• It uses plain JavaScript, not jQuery.
• IE11 and below are not supported.