Bootstrap 3 Tutorial

Bootstrap Get Started

Last modified on: October 28, 2024

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<h3>Bootstrap 3: Getting Started Guide</h3>
<p>Bootstrap 3 is a popular version of the Bootstrap framework that helps you quickly build responsive, mobile-first web designs. It provides a powerful grid system, responsive layout options, and a library of ready-to-use components like navigation bars, forms, and modals.</p>
<hr />
<h3>Setting Up Bootstrap 3</h3>
<p>To use Bootstrap 3, you need to include the Bootstrap CSS and JavaScript files in your project. You can either download Bootstrap files or use the CDN for quick access.</p>
<h4>Option 1: Using the Bootstrap CDN (recommended for quick setup)</h4>
<p>Add the following links in the <code>&lt;head&gt;</code> section of your HTML file:</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
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<pre class="language-markup"><code>&lt;!-- Bootstrap CSS --&gt;
&lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;

&lt;!-- Optional theme --&gt;
&lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css"&gt;
</code></pre>
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<p>Then, add the following at the end of the <code>&lt;body&gt;</code> section:</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary">
<pre class="language-markup"><code>&lt;!-- jQuery (necessary for Bootstrap's JavaScript plugins) --&gt;
&lt;script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"&gt;&lt;/script&gt;

&lt;!-- Bootstrap JavaScript --&gt;
&lt;script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js"&gt;&lt;/script&gt;
</code></pre>
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<h4>Option 2: Downloading Bootstrap Files</h4>
<ol>
<li>Download the latest Bootstrap 3 files from the <a target="_new" rel="noopener">Bootstrap website</a>.</li>
<li>Extract the files, and place the CSS and JavaScript files into your project.</li>
<li>Link the CSS and JS files similarly to the CDN links above but using the local paths.</li>
</ol>
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<h3>Example: Basic Bootstrap 3 Template</h3>
<p>Here's a sample template that uses Bootstrap 3 to create a basic responsive webpage.</p>
<div class="contain-inline-size rounded-md border-[0.5px] border-token-border-medium relative bg-token-sidebar-surface-primary dark:bg-gray-950">
<div class="flex items-center text-token-text-secondary px-4 py-2 text-xs font-sans justify-between rounded-t-md h-9 bg-token-sidebar-surface-primary dark:bg-token-main-surface-secondary">html</div>
<div class="sticky top-9 md:top-[5.75rem]">
<div class="absolute bottom-0 right-2 flex h-9 items-center">
<div class="flex items-center rounded bg-token-sidebar-surface-primary px-2 font-sans text-xs text-token-text-secondary dark:bg-token-main-surface-secondary">
<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"&gt;
    &lt;title&gt;Bootstrap 3 Getting Started&lt;/title&gt;
    &lt;!-- Bootstrap CSS CDN --&gt;
    &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css"&gt;
    &lt;link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap-theme.min.css"&gt;
&lt;/head&gt;
&lt;body&gt;

&lt;!-- Navigation Bar --&gt;
    &lt;nav class="navbar navbar-default"&gt;
        &lt;div class="container-fluid"&gt;
            &lt;div class="navbar-header"&gt;
                &lt;button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar"&gt;
                    &lt;span class="sr-only"&gt;Toggle navigation&lt;/span&gt;
                    &lt;span class="icon-bar"&gt;&lt;/span&gt;
                    &lt;span class="icon-bar"&gt;&lt;/span&gt;
                    &lt;span class="icon-bar"&gt;&lt;/span&gt;
                &lt;/button&gt;
                &lt;a class="navbar-brand" href="#"&gt;My Bootstrap Site&lt;/a&gt;
            &lt;/div&gt;
            &lt;div id="navbar" class="collapse navbar-collapse"&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="#about"&gt;About&lt;/a&gt;&lt;/li&gt;
                    &lt;li&gt;&lt;a href="#contact"&gt;Contact&lt;/a&gt;&lt;/li&gt;
                &lt;/ul&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/nav&gt;

&lt;!-- Main Content Area --&gt;
    &lt;div class="container"&gt;
        &lt;div class="jumbotron"&gt;
            &lt;h1&gt;Welcome to Bootstrap 3&lt;/h1&gt;
            &lt;p&gt;This is a simple example page using Bootstrap 3 to showcase responsive design.&lt;/p&gt;
            &lt;p&gt;&lt;a class="btn btn-primary btn-lg" href="#" role="button"&gt;Learn more&lt;/a&gt;&lt;/p&gt;
        &lt;/div&gt;

&lt;div class="row"&gt;
            &lt;div class="col-md-4"&gt;
                &lt;h2&gt;Section 1&lt;/h2&gt;
                &lt;p&gt;Some information about section 1.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="col-md-4"&gt;
                &lt;h2&gt;Section 2&lt;/h2&gt;
                &lt;p&gt;Some information about section 2.&lt;/p&gt;
            &lt;/div&gt;
            &lt;div class="col-md-4"&gt;
                &lt;h2&gt;Section 3&lt;/h2&gt;
                &lt;p&gt;Some information about section 3.&lt;/p&gt;
            &lt;/div&gt;
        &lt;/div&gt;
    &lt;/div&gt;

&lt;!-- Footer --&gt;
    &lt;footer class="container text-center"&gt;
        &lt;p&gt;&amp;copy; 2024 My Bootstrap 3 Site&lt;/p&gt;
    &lt;/footer&gt;

&lt;!-- Bootstrap JS 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>Explanation of Key Components</h3>
<ol>
<li>
<p><strong>Navbar</strong>:</p>
<ul>
<li>This example uses a responsive navigation bar with a brand name and a collapsible menu for smaller screens.</li>
</ul>
</li>
<li>
<p><strong>Jumbotron</strong>:</p>
<ul>
<li>The jumbotron component highlights important information. It&rsquo;s perfect for displaying a main message or call to action.</li>
</ul>
</li>
<li>
<p><strong>Grid System</strong>:</p>
<ul>
<li>The <code>container</code> and <code>row</code> classes create a responsive grid layout. Bootstrap 3 divides the grid into 12 columns, and you can specify column widths for different screen sizes using classes like <code>col-md-4</code>.</li>
</ul>
</li>
<li>
<p><strong>Buttons</strong>:</p>
<ul>
<li>The template uses a button styled with <code>btn</code> and <code>btn-primary</code> classes to make a prominent "Learn more" link.</li>
</ul>
</li>
<li>
<p><strong>Footer</strong>:</p>
<ul>
<li>A simple footer is added at the end with text centered using <code>text-center</code>.</li>
</ul>
</li>
</ol>
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<h3>&nbsp;</h3>
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