What is Bootstrap in web development?

Bootstrap is a front-end framework designed to facilitate the development of responsive websites and web applications. It provides developers with pre-designed CSS styles and JavaScript components, which allow for quicker and easier design without starting from scratch. The responsive grid system of Bootstrap enables websites to adapt to various screen sizes and resolutions, ensuring optimal user experience across different devices, such as desktops, tablets, and smartphones.

This framework includes a collection of reusable code snippets for elements like buttons, forms, navigation bars, and modals, making it easier to create consistent designs that adhere to best practices in web development. Moreover, Bootstrap incorporates a mobile-first approach, meaning it is designed with consideration for smaller screen sizes first before adapting to larger screens.

By utilizing Bootstrap, developers can save time and effort while building aesthetically pleasing, functional, and fluid web interfaces. Its popularity stems from its ease of use and the extensive community support, which also contributes to a wide array of resources, such as templates and themes that can enhance the development process.