Bootstrap 3 Tutorial

Bootstrap 3 Tutorial

Last modified on: October 28, 2024

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<h3>Bootstrap 3 Tutorial</h3>
<p>Bootstrap 3 is a popular front-end framework that focuses on responsive, mobile-first web design. Its grid system, pre-designed components, and built-in utilities simplify the process of building visually appealing and responsive websites.</p>
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<h3>Getting Started with Bootstrap 3</h3>
<p>To use Bootstrap 3, include its CSS and JavaScript files in your HTML. You can download Bootstrap 3 from the <a target="_new" rel="noopener">official site</a> or use a CDN to link the files directly.</p>
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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 3 Tutorial&lt;/title&gt;
    &lt;!-- Bootstrap 3 CSS --&gt;
    &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;!-- Navbar --&gt;
    &lt;nav class="navbar navbar-default"&gt;
        &lt;div class="container-fluid"&gt;
            &lt;div class="navbar-header"&gt;
                &lt;a class="navbar-brand" href="#"&gt;Bootstrap 3&lt;/a&gt;
            &lt;/div&gt;
            &lt;ul class="nav navbar-nav"&gt;
                &lt;li class="active"&gt;&lt;a href="#"&gt;Home&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a href="#"&gt;About&lt;/a&gt;&lt;/li&gt;
                &lt;li&gt;&lt;a 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"&gt;
        &lt;h1&gt;Welcome to Bootstrap 3&lt;/h1&gt;
        &lt;p&gt;This is a simple template using Bootstrap 3's responsive grid and components.&lt;/p&gt;

&lt;!-- Grid System --&gt;
        &lt;div class="row"&gt;
            &lt;div class="col-sm-4"&gt;
                &lt;h3&gt;Column 1&lt;/h3&gt;
                &lt;p&gt;Content for the first column.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="col-sm-4"&gt;
                &lt;h3&gt;Column 2&lt;/h3&gt;
                &lt;p&gt;Content for the second column.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="col-sm-4"&gt;
                &lt;h3&gt;Column 3&lt;/h3&gt;
                &lt;p&gt;Content for the third column.&lt;/p&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;

&lt;!-- Bootstrap 3 JavaScript and dependencies --&gt;
    &lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"&gt;&lt;/script&gt;
    &lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"&gt;&lt;/script&gt;
&lt;/body&gt;
&lt;/html&gt;
</code></pre>
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<h3>Key Features of Bootstrap 3</h3>
<ol>
<li>
<p><strong>Responsive Grid System</strong>:</p>
<ul>
<li>Bootstrap 3 uses a 12-column responsive grid system, making it easy to create layouts that adapt to various screen sizes.</li>
<li>Use classes like <code>col-sm-4</code>, <code>col-md-6</code>, etc., to create responsive columns based on screen width.</li>
</ul>
</li>
<li>
<p><strong>Pre-designed Components</strong>:</p>
<ul>
<li>Includes buttons, navigation bars, dropdowns, forms, modals, and more.</li>
<li>Each component comes with predefined styles that you can customize using your own CSS.</li>
</ul>
</li>
<li>
<p><strong>JavaScript Plugins</strong>:</p>
<ul>
<li>Includes optional JavaScript plugins for components like modals, tooltips, carousels, and popovers.</li>
<li>Add interactivity by including the Bootstrap JavaScript file and any dependencies, such as jQuery.</li>
</ul>
</li>
<li>
<p><strong>Utility Classes</strong>:</p>
<ul>
<li>Provides classes for text alignment, color, background, spacing, visibility, and more.</li>
<li>Utility classes make styling quick and reduce the need for custom CSS.</li>
</ul>
</li>
</ol>
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<h3>&nbsp;</h3>
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<h3>Conclusion</h3>
<p>Bootstrap 3 provides an easy-to-use, flexible framework for responsive design. With its grid system, extensive component library, and utilities, you can quickly build beautiful, mobile-friendly websites. Use this template to get started, and explore Bootstrap&rsquo;s various components to further customize your projects.</p>

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