Bootstrap 5 – An Overview – What’s new and What’s Changed

Bootstrap 5 Overview

Bootstrap 5 is a major modernization of the framework, focusing on performance, customization, and removing legacy dependencies. The biggest shift is the move away from jQuery, alongside a refreshed design system, new utilities, and dropped support for older browsers.

🚀 Key New Features in Bootstrap 5

• Vanilla JavaScript — All components rewritten without jQuery, reducing bundle size and improving performance.
• CSS Custom Properties — Extensive use of CSS variables for easier theming and dynamic styling.
• XXL Breakpoint — New xxl grid tier for screens ≥1400px.
• Utilities API — Generate or customize utility classes programmatically.
• Offcanvas Component — Slide‑in panels for navigation or UI elements.
• Bootstrap Icons — Official SVG icon library integrated into the ecosystem.
• Improved Forms — Redesigned form controls, floating labels, and consistent cross‑browser styling.
• Dark Mode Support — Easier to implement via CSS variables.

🔧 Major Changes from Bootstrap 4

• jQuery Removed — Components now use a new JS API.
• IE11 Support Dropped — Allows use of modern CSS/JS features.
• Updated Grid System — Adds xxl, updates gutter classes (g-*, gx-*, gy-*).
• Reworked Utilities — More granular spacing, display, flex, and color utilities.
• Improved Modals & Dropdowns — Better accessibility and customization.
• Sass & CSS Updates — Cleaner variable structure and more modular architecture.