Bootstrap

Bootstrap is a popular open-source front-end framework for developing responsive and mobile-first websites. Created by Twitter, it provides a collection of CSS and JavaScript tools for designing web pages with a consistent and modern appearance. Bootstrap includes a grid system, pre-designed components like buttons, forms, and navigation bars, as well as utilities for typography and layout. Its responsive design capabilities ensure that websites look and function well on various devices, from desktops to smartphones. By offering ready-to-use code and a unified design language, Bootstrap significantly speeds up the development process and ensures cross-browser compatibility, making it a favorite among web developers.