Bootstrap 4 Tutorial

BS4 HOME

Last modified on: October 25, 2024

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<h2 class="relative p-1 rounded-sm flex items-center justify-center bg-token-main-surface-primary text-token-text-primary h-8 w-8">Bootstrap 4 Home: Getting Started with Bootstrap 4</h2>
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<p>Bootstrap 4 (BS4) is a popular front-end framework that enables developers to create responsive and mobile-first websites quickly and efficiently. With its built-in CSS classes and components, you can design modern, clean layouts without starting from scratch.</p>
<h2>What is Bootstrap 4?</h2>
<p>Bootstrap 4 is the fourth major version of the Bootstrap framework, developed by Twitter. It provides a set of CSS and JavaScript components that simplify web design. Key features include:</p>
<ul>
<li><strong>Responsive Grid System:</strong> Built with Flexbox, enabling easy layout adjustments across different screen sizes.</li>
<li><strong>Pre-styled Components:</strong> Ready-to-use components like buttons, cards, modals, and navigation bars.</li>
<li><strong>Utility Classes:</strong> Built-in classes for spacing, sizing, colors, and more, allowing rapid customization.</li>
<li><strong>JavaScript Plugins:</strong> Custom jQuery plugins to enhance functionality, such as carousels, modals, and tooltips.</li>
</ul>
<h2>Setting Up Bootstrap 4</h2>
<p>To get started with Bootstrap 4, include the Bootstrap CSS and JS files in your HTML document. You can either download Bootstrap or use a CDN.</p>
<h3>Example HTML Template</h3>
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<pre class="language-markup"><code>&lt;!DOCTYPE html&gt;
&lt;html lang="en"&gt;
&lt;head&gt;
    &lt;meta charset="UTF-8"&gt;
    &lt;meta name="viewport" content="width=device-width, initial-scale=1.0"&gt;
    &lt;title&gt;Bootstrap 4 Home&lt;/title&gt;
    &lt;!-- Bootstrap CSS CDN --&gt;
    &lt;link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/css/bootstrap.min.css"&gt;
    &lt;style&gt;
        body {
            padding-top: 56px; /* For fixed navbar spacing */
        }
    &lt;/style&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;!-- Navigation Bar --&gt;
    &lt;nav class="navbar navbar-expand-lg navbar-dark bg-dark fixed-top"&gt;
        &lt;a class="navbar-brand" href="#"&gt;My Bootstrap 4 Site&lt;/a&gt;
        &lt;button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation"&gt;
            &lt;span class="navbar-toggler-icon"&gt;&lt;/span&gt;
        &lt;/button&gt;
        &lt;div class="collapse navbar-collapse" id="navbarNav"&gt;
            &lt;ul class="navbar-nav"&gt;
                &lt;li class="nav-item active"&gt;
                    &lt;a class="nav-link" href="#"&gt;Home&lt;/a&gt;
                &lt;/li&gt;
                &lt;li class="nav-item"&gt;
                    &lt;a class="nav-link" href="#"&gt;About&lt;/a&gt;
                &lt;/li&gt;
                &lt;li class="nav-item"&gt;
                    &lt;a class="nav-link" href="#"&gt;Services&lt;/a&gt;
                &lt;/li&gt;
                &lt;li class="nav-item"&gt;
                    &lt;a class="nav-link" href="#"&gt;Contact&lt;/a&gt;
                &lt;/li&gt;
            &lt;/ul&gt;
        &lt;/div&gt;
    &lt;/nav&gt;

&lt;!-- Main Content --&gt;
    &lt;div class="container mt-5"&gt;
        &lt;h1&gt;Welcome to My Bootstrap 4 Website&lt;/h1&gt;
        &lt;p&gt;This is a simple home page using Bootstrap 4. Utilize Bootstrap's components and grid system to create responsive layouts easily!&lt;/p&gt;
        &lt;div class="row"&gt;
            &lt;div class="col-md-6"&gt;
                &lt;h2&gt;About Us&lt;/h2&gt;
                &lt;p&gt;Learn about our mission and values.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="col-md-6"&gt;
                &lt;h2&gt;Our Services&lt;/h2&gt;
                &lt;p&gt;Discover the services we offer to our clients.&lt;/p&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;

&lt;!-- Bootstrap JS and dependencies --&gt;
    &lt;script src="https://code.jquery.com/jquery-3.5.1.slim.min.js"&gt;&lt;/script&gt;
    &lt;script src="https://cdn.jsdelivr.net/npm/@popperjs/core@2.9.2/dist/umd/popper.min.js"&gt;&lt;/script&gt;
    &lt;script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.2/js/bootstrap.min.js"&gt;&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
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<h3>Explanation of the Code</h3>
<ul>
<li><strong>HTML Structure:</strong> The document begins with the standard HTML5 declaration and includes the necessary Bootstrap CSS via a CDN link.</li>
<li><strong>Navbar:</strong> A responsive navigation bar created using Bootstrap's navbar component, fixed to the top of the viewport.</li>
<li><strong>Main Content Area:</strong> Utilizes Bootstrap's grid system to create a responsive layout that adapts to different screen sizes.</li>
<li><strong>JavaScript Dependencies:</strong> Includes jQuery, Popper.js (for dropdowns and tooltips), and Bootstrap's JavaScript for interactivity.</li>
</ul>
<h2>Key Features of Bootstrap 4</h2>
<ul>
<li><strong>Responsive Design:</strong> Automatically adjusts the layout for different screen sizes, from mobile to desktop.</li>
<li><strong>Built-in Components:</strong> Offers a variety of components like modals, carousels, buttons, forms, and more.</li>
<li><strong>Customizable:</strong> Easily customize Bootstrap styles using SASS or by overriding CSS.</li>
<li><strong>Cross-browser Compatibility:</strong> Ensures consistent performance across modern browsers.</li>
</ul>
<h2>&nbsp;</h2>
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