What is bootstrap?

Bootstrap is an open-source CSS framework that facilitates the creation of responsive websites by offering a library of reusable components for CSS, HTML, and JavaScript. Initially developed at Twitter by Mark Otto and Jacob Thornton to standardize design patterns, it became open source in 2011 and quickly gained popularity, evolving into Bootstrap 5. The framework's grid system enables automatic layout adjustments based on screen size, while its components allow developers to avoid writing custom code for standard elements like forms and buttons. Bootstrap is valued for saving time and offering customization through CSS variables, allowing developers to tailor designs with minimal changes. Its active community on platforms like GitHub ensures continuous improvement and provides support for beginners, making it a widely used tool for various web projects ranging from ecommerce sites to digital magazines.