Bootstrap is a popular front-end framework for building responsive, mobile-first websites and web applications. It was originally developed by Twitter and is now open-source. Key Features: Responsive Grid System: A flexible grid layout based on 12 columns to create responsive designs. Pre-designed Components: Buttons, forms, navbars, modals, carousels, alerts, and more. Customizable: Easily customizable through variables, allowing adjustments in colors, typography, and layout. Cross-browser Compatibility: Works across all major browsers. Utilities: Ready-to-use CSS classes for spacing, alignment, and more. Versions: Bootstrap 3: Focused on a mobile-first approach. Bootstrap 4: Introduced Flexbox for better alignment and responsiveness. Bootstrap 5: Removed dependency on jQuery and focused on performance improvements. Grid System: Built on a 12-column layout, allowing you to create flexible and adaptive designs. Grid classes like .col-, .col-md-, .col-lg-, etc., adjust layout based on screen size. Responsive Design: Bootstrap uses media queries to adapt to different screen sizes, ensuring a consistent experience across devices. Typography & Icons: Includes predefined classes for headings, text, and icons (Font Awesome or Bootstrap Icons). JavaScript Components: Includes interactive components like modals, dropdowns, carousels, tooltips, and more, which are powered by JavaScript or Bootstrap’s own JavaScript utilities. Questions: 1. What is BOOTSTRAP? 2. What are the versions of BOOTSRAP? 3. What does Bootstrap uses to adapt different screen sizes? 4.What are the components in Bootstrap?