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Download Bootstrap 4: A Complete Tutorial on CSS and JS


Bootstrap 4 Download: How to Get Started with the Most Popular HTML, CSS, and JS Framework




If you are looking for a way to create responsive, mobile-first websites that look great and work well on any device, you might want to consider using Bootstrap 4. Bootstrap 4 is the latest version of the most popular HTML, CSS, and JavaScript framework for web development. In this article, we will show you how to download Bootstrap 4, what are its features and benefits, and how to use it in your projects.




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What is Bootstrap 4?




Bootstrap 4 is a free and open-source framework that helps you create websites faster and easier. It provides a set of ready-made components, such as buttons, forms, cards, navbars, modals, and more, that you can use in your HTML code. It also comes with a powerful grid system that allows you to create flexible layouts for different screen sizes. And it has a rich collection of JavaScript plugins that add interactivity and functionality to your web pages.


Features and benefits of Bootstrap 4




Some of the features and benefits of Bootstrap 4 are:



  • It is based on Sass, a popular CSS preprocessor that lets you use variables, mixins, functions, and other features to write more concise and maintainable code.



  • It has a new grid tier for smaller screens, which makes it easier to create responsive websites for mobile devices.



  • It introduces relative CSS units, such as rem and em, which make it more scalable and adaptable to different font sizes and zoom levels.



  • It has brand new Bootstrap cards, which are versatile containers that can hold images, text, links, buttons, and more.



  • It has a new reboot module, which provides a consistent base style for all HTML elements and removes browser inconsistencies.



  • It has opt-in flexbox support, which enables you to use the modern CSS flexbox layout mode for creating complex and flexible layouts.



  • It has streamlined variable customization, which makes it easier to change the default values of colors, fonts, breakpoints, and other settings.



  • It has new utility classes for spacing, alignment, display, sizing, and more, which give you more control over the appearance and behavior of your elements.



Differences between Bootstrap 5 and Bootstrap 3 & 4




Bootstrap 5 is the newest version of Bootstrap that was released in 2021. It supports the latest browsers and platforms but does not support Internet Explorer 11 and below. The main differences between Bootstrap 5 and Bootstrap 3 & 4 are:



  • Bootstrap 5 has switched to JavaScript instead of jQuery for its JavaScript plugins. This means that you don't need to include jQuery in your project anymore.



  • Bootstrap 5 has dropped support for Popper.js as a dependency for its JavaScript plugins. Instead, it uses its own custom positioning engine for tooltips, popovers, dropdowns, etc.



  • Bootstrap 5 has redesigned some of its components, such as forms, buttons, navbars, alerts, badges, etc., to make them more modern and consistent.



  • Bootstrap 5 has added some new components, such as offcanvas menu, accordion, placeholders, avatars, etc., to expand its functionality and usability.



  • Bootstrap 5 has improved its accessibility features by adding more semantic HTML elements, ARIA attributes, keyboard navigation support, etc.



How to download Bootstrap 4?




There are several ways to download Bootstrap 4 depending on your preferences and needs. Here are some of the most common options:


Compiled CSS and JS




This is the easiest way to download Bootstrap 4. You just need to download the compiled and minified versions of the Bootstrap CSS and JavaScript files from the official website. Then, you can link them in your HTML file using the <link> and <script> tags. For example:


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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Bootstrap 4 Example</title> <!-- Bootstrap CSS --> <link rel="stylesheet" href="css/bootstrap.min.css"> </head> <body> <!-- Your HTML code here --> <!-- Bootstrap JS --> <script src="js/bootstrap.min.js"></script> </body> </html>


Source files




If you want to have more control over the customization and compilation of Bootstrap 4, you can download the source files from the official website or GitHub. The source files include the Sass files, the JavaScript files, and the documentation files. You will need a Sass compiler and a module bundler to use them in your project. You can also use a task runner like Gulp or Grunt to automate the process.


jsDelivr CDN




If you don't want to download Bootstrap 4 files to your local machine, you can use a CDN (Content Delivery Network) to link them directly from a remote server. A CDN is a network of servers that deliver web content faster and more efficiently to users based on their location. One of the CDNs that support Bootstrap 4 is jsDelivr. To use it, you just need to add the following <link> and <script> tags in your HTML file:


<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Bootstrap 4 Example</title> <!-- Bootstrap CSS from jsDelivr CDN --> <link rel="stylesheet" href=" </head> <body> <!-- Your HTML code here --> <!-- Bootstrap JS from jsDelivr CDN --> <script src=" </body> </html>


Package managers




If you are using a package manager like npm or yarn to manage your project dependencies, you can also install Bootstrap 4 using them. A package manager is a tool that helps you install, update, and manage packages of code that you use in your project. To install Bootstrap 4 using npm, you need to run the following command in your terminal:


npm install bootstrap@4


To install Bootstrap 4 using yarn, you need to run the following command in your terminal:


yarn add bootstrap@4


After installing Bootstrap 4 using a package manager, you can import it in your JavaScript or Sass files using the import or @import statements. For example:


// Import Bootstrap CSS in JavaScript import 'bootstrap/dist/css/bootstrap.min.css'; // Import Bootstrap CSS in Sass @import 'bootstrap/scss/bootstrap'; How to use Bootstrap 4?




Now that you have downloaded Bootstrap 4, you might be wondering how to use it in your web development projects. Here are some of the basic steps to get started with Bootstrap 4:


Starter template




A good way to start using Bootstrap 4 is to use the starter template that is provided on the official website. The starter template is a basic HTML file that includes the necessary links to the Bootstrap CSS and JS files, as well as a meta tag for responsive design. You can copy and paste the starter template in your HTML file and then add your own content and components. For example:


<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"> <title>Bootstrap 4 Example</title> <!-- Bootstrap CSS --> <link rel="stylesheet" href="css/bootstrap.min.css"> </head> <body> <div > <h1>Hello, world!</h1> <p>This is a simple example of using Bootstrap 4.</p> <button >Click me</button> </div> <!-- Bootstrap JS --> <script src="js/bootstrap.min.js"></script> </body> </html>


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