📅 最后修改于: 2023-12-03 15:13:40.909000 🧑 作者: Mango
Bootstrap 4 is a popular front-end web development framework created by Twitter. It provides developers with a wide range of pre-built UI components and styling options, which helps accelerate the development process and create responsive, mobile-first web applications.
Bootstrap 4 is built with a mobile-first approach, which means that all the components are designed to be fully responsive for different screen sizes. This makes it easy to create web applications that work well on desktops, tablets, and smartphones.
Bootstrap 4 provides a wide range of pre-built components such as forms, buttons, cards, dropdowns, navbars, and more. These components can be easily customized to match the design of your web application.
In addition to the pre-built components, Bootstrap 4 also provides a robust set of CSS classes and utilities that can be used to style your web application. These classes can be easily customized or extended to fit your specific needs.
Bootstrap 4 comes with a number of JavaScript plugins that can be used to add interactivity to your web application, such as carousels, modals, tooltips, and more.
To get started with Bootstrap 4, you can either download the framework from the official website or include it in your project using a CDN. Once you have included the framework, you can start using the pre-built components and CSS classes to style your web application.
Here is an example of how to include Bootstrap 4 using a CDN:
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Bootstrap 4 Example</title>
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
</head>
<body>
<div class="container">
<h1>Bootstrap 4 Example</h1>
<p>This is a simple example of how to use Bootstrap 4.</p>
</div>
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/esm/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
</body>
</html>
Bootstrap 4 is a powerful front-end web development framework that can help you create responsive, mobile-first web applications quickly and easily. With its pre-built components, customizable CSS, and JavaScript plugins, it is a great choice for developers who want to speed up their development process.