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Add v4.6.0 docs

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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Documentation and examples for displaying inline and multiline blocks of code with Bootstrap.">
<meta name="author" content="Mark Otto, Jacob Thornton, and Bootstrap contributors">
<meta name="generator" content="Hugo 0.80.0">
<meta name="docsearch:language" content="en">
<meta name="docsearch:version" content="4.6">
<title>Code · Bootstrap v4.6</title>
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<ul>
<li><a href="#inline-code">Inline code</a></li>
<li><a href="#code-blocks">Code blocks</a></li>
<li><a href="#variables">Variables</a></li>
<li><a href="#user-input">User input</a></li>
<li><a href="#sample-output">Sample output</a></li>
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<a class="btn btn-sm btn-bd-light my-2 my-md-0" href="https://github.com/twbs/bootstrap/blob/v4-dev/site/content/docs/4.6/content/code.md" title="View and edit this file on GitHub" target="_blank" rel="noopener">View on GitHub</a>
<h1 class="bd-title" id="content">Code</h1>
</div>
<p class="bd-lead">Documentation and examples for displaying inline and multiline blocks of code with Bootstrap.</p>
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
<h2 id="inline-code">Inline code</h2>
<p>Wrap inline snippets of code with <code>&lt;code&gt;</code>. Be sure to escape HTML angle brackets.</p>
<div class="bd-example">
For example, <code>&lt;section&gt;</code> should be wrapped as inline.
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html">For example, <span class="p">&lt;</span><span class="nt">code</span><span class="p">&gt;</span><span class="ni">&amp;lt;</span>section<span class="ni">&amp;gt;</span><span class="p">&lt;/</span><span class="nt">code</span><span class="p">&gt;</span> should be wrapped as inline.</code></pre></div>
<h2 id="code-blocks">Code blocks</h2>
<p>Use <code>&lt;pre&gt;</code>s for multiple lines of code. Once again, be sure to escape any angle brackets in the code for proper rendering. You may optionally add the <code>.pre-scrollable</code> class, which will set a max-height of 340px and provide a y-axis scrollbar.</p>
<div class="bd-example">
<pre><code>&lt;p&gt;Sample text here...&lt;/p&gt;
&lt;p&gt;And another line of sample text here...&lt;/p&gt;
</code></pre>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">pre</span><span class="p">&gt;&lt;</span><span class="nt">code</span><span class="p">&gt;</span><span class="ni">&amp;lt;</span>p<span class="ni">&amp;gt;</span>Sample text here...<span class="ni">&amp;lt;</span>/p<span class="ni">&amp;gt;</span>
<span class="ni">&amp;lt;</span>p<span class="ni">&amp;gt;</span>And another line of sample text here...<span class="ni">&amp;lt;</span>/p<span class="ni">&amp;gt;</span>
<span class="p">&lt;/</span><span class="nt">code</span><span class="p">&gt;&lt;/</span><span class="nt">pre</span><span class="p">&gt;</span></code></pre></div>
<h2 id="variables">Variables</h2>
<p>For indicating variables use the <code>&lt;var&gt;</code> tag.</p>
<div class="bd-example">
<var>y</var> = <var>m</var><var>x</var> + <var>b</var>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">var</span><span class="p">&gt;</span>y<span class="p">&lt;/</span><span class="nt">var</span><span class="p">&gt;</span> = <span class="p">&lt;</span><span class="nt">var</span><span class="p">&gt;</span>m<span class="p">&lt;/</span><span class="nt">var</span><span class="p">&gt;&lt;</span><span class="nt">var</span><span class="p">&gt;</span>x<span class="p">&lt;/</span><span class="nt">var</span><span class="p">&gt;</span> + <span class="p">&lt;</span><span class="nt">var</span><span class="p">&gt;</span>b<span class="p">&lt;/</span><span class="nt">var</span><span class="p">&gt;</span></code></pre></div>
<h2 id="user-input">User input</h2>
<p>Use the <code>&lt;kbd&gt;</code> to indicate input that is typically entered via keyboard.</p>
<div class="bd-example">
To switch directories, type <kbd>cd</kbd> followed by the name of the directory.<br>
To edit settings, press <kbd><kbd>ctrl</kbd> + <kbd>,</kbd></kbd>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html">To switch directories, type <span class="p">&lt;</span><span class="nt">kbd</span><span class="p">&gt;</span>cd<span class="p">&lt;/</span><span class="nt">kbd</span><span class="p">&gt;</span> followed by the name of the directory.<span class="p">&lt;</span><span class="nt">br</span><span class="p">&gt;</span>
To edit settings, press <span class="p">&lt;</span><span class="nt">kbd</span><span class="p">&gt;&lt;</span><span class="nt">kbd</span><span class="p">&gt;</span>ctrl<span class="p">&lt;/</span><span class="nt">kbd</span><span class="p">&gt;</span> + <span class="p">&lt;</span><span class="nt">kbd</span><span class="p">&gt;</span>,<span class="p">&lt;/</span><span class="nt">kbd</span><span class="p">&gt;&lt;/</span><span class="nt">kbd</span><span class="p">&gt;</span></code></pre></div>
<h2 id="sample-output">Sample output</h2>
<p>For indicating sample output from a program use the <code>&lt;samp&gt;</code> tag.</p>
<div class="bd-example">
<samp>This text is meant to be treated as sample output from a computer program.</samp>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">samp</span><span class="p">&gt;</span>This text is meant to be treated as sample output from a computer program.<span class="p">&lt;/</span><span class="nt">samp</span><span class="p">&gt;</span></code></pre></div>
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<meta name="description" content="Documentation and examples for displaying related images and text with the figure component in Bootstrap.">
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<h1 class="bd-title" id="content">Figures</h1>
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<p class="bd-lead">Documentation and examples for displaying related images and text with the figure component in Bootstrap.</p>
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<p>Anytime you need to display a piece of content—like an image with an optional caption, consider using a <code>&lt;figure&gt;</code>.</p>
<p>Use the included <code>.figure</code> , <code>.figure-img</code> and <code>.figure-caption</code> classes to provide some baseline styles for the HTML5 <code>&lt;figure&gt;</code> and <code>&lt;figcaption&gt;</code> elements. Images in figures have no explicit size, so be sure to add the <code>.img-fluid</code> class to your <code>&lt;img&gt;</code> to make it responsive.</p>
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<figcaption class="figure-caption">A caption for the above image.</figcaption>
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</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">figure</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure-img img-fluid rounded&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">figcaption</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure-caption&#34;</span><span class="p">&gt;</span>A caption for the above image.<span class="p">&lt;/</span><span class="nt">figcaption</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">figure</span><span class="p">&gt;</span></code></pre></div>
<p>Aligning the figure&rsquo;s caption is easy with our <a href="/docs/4.6/utilities/text/#text-alignment">text utilities</a>.</p>
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<svg class="bd-placeholder-img figure-img img-fluid rounded" width="400" height="300" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: 400x300" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">400x300</text></svg>
<figcaption class="figure-caption text-right">A caption for the above image.</figcaption>
</figure>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">figure</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure-img img-fluid rounded&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">figcaption</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;figure-caption text-right&#34;</span><span class="p">&gt;</span>A caption for the above image.<span class="p">&lt;/</span><span class="nt">figcaption</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">figure</span><span class="p">&gt;</span></code></pre></div>
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<li><a href="#responsive-images">Responsive images</a></li>
<li><a href="#image-thumbnails">Image thumbnails</a></li>
<li><a href="#aligning-images">Aligning images</a></li>
<li><a href="#picture">Picture</a></li>
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<h1 class="bd-title" id="content">Images</h1>
</div>
<p class="bd-lead">Documentation and examples for opting images into responsive behavior (so they never become larger than their parent elements) and add lightweight styles to them—all via classes.</p>
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<h2 id="responsive-images">Responsive images</h2>
<p>Images in Bootstrap are made responsive with <code>.img-fluid</code>. <code>max-width: 100%;</code> and <code>height: auto;</code> are applied to the image so that it scales with the parent element.</p>
<div class="bd-example">
<svg class="bd-placeholder-img bd-placeholder-img-lg img-fluid" width="100%" height="250" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: Responsive image" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">Responsive image</text></svg>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;img-fluid&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span></code></pre></div>
<div class="bd-callout bd-callout-warning">
<h5 id="svg-images-and-internet-explorer">SVG images and Internet Explorer</h5>
<p>In Internet Explorer 10 and 11, SVG images with <code>.img-fluid</code> are disproportionately sized. To fix this, add <code>width: 100%;</code> or <code>.w-100</code> where necessary. This fix improperly sizes other image formats, so Bootstrap doesn&rsquo;t apply it automatically.
</div>
<h2 id="image-thumbnails">Image thumbnails</h2>
<p>In addition to our <a href="/docs/4.6/utilities/borders/">border-radius utilities</a>, you can use <code>.img-thumbnail</code> to give an image a rounded 1px border appearance.</p>
<div class="bd-example">
<svg class="bd-placeholder-img img-thumbnail" width="200" height="200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="A generic square placeholder image with a white border around it, making it resemble a photograph taken with an old instant camera: 200x200" preserveAspectRatio="xMidYMid slice" focusable="false"><title>A generic square placeholder image with a white border around it, making it resemble a photograph taken with an old instant camera</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">200x200</text></svg>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;img-thumbnail&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span></code></pre></div>
<h2 id="aligning-images">Aligning images</h2>
<p>Align images with the <a href="/docs/4.6/utilities/float/">helper float classes</a> or <a href="/docs/4.6/utilities/text/#text-alignment">text alignment classes</a>. <code>block</code>-level images can be centered using <a href="/docs/4.6/utilities/spacing/#horizontal-centering">the <code>.mx-auto</code> margin utility class</a>.</p>
<div class="bd-example">
<svg class="bd-placeholder-img rounded float-left" width="200" height="200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: 200x200" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">200x200</text></svg>
<svg class="bd-placeholder-img rounded float-right" width="200" height="200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: 200x200" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">200x200</text></svg>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;rounded float-left&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;rounded float-right&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span></code></pre></div>
<div class="bd-example">
<svg class="bd-placeholder-img rounded mx-auto d-block" width="200" height="200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: 200x200" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">200x200</text></svg>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;rounded mx-auto d-block&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span></code></pre></div>
<div class="bd-example">
<div class="text-center">
<svg class="bd-placeholder-img rounded" width="200" height="200" xmlns="http://www.w3.org/2000/svg" role="img" aria-label="Placeholder: 200x200" preserveAspectRatio="xMidYMid slice" focusable="false"><title>Placeholder</title><rect width="100%" height="100%" fill="#6c757d"/><text x="50%" y="50%" fill="#dee2e6" dy=".3em">200x200</text></svg>
</div>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">div</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;text-center&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;rounded&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">div</span><span class="p">&gt;</span></code></pre></div>
<h2 id="picture">Picture</h2>
<p>If you are using the <code>&lt;picture&gt;</code> element to specify multiple <code>&lt;source&gt;</code> elements for a specific <code>&lt;img&gt;</code>, make sure to add the <code>.img-*</code> classes to the <code>&lt;img&gt;</code> and not to the <code>&lt;picture&gt;</code> tag.</p>
<div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">picture</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">source</span> <span class="na">srcset</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">type</span><span class="o">=</span><span class="s">&#34;image/svg+xml&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">img</span> <span class="na">src</span><span class="o">=</span><span class="s">&#34;...&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;img-fluid img-thumbnail&#34;</span> <span class="na">alt</span><span class="o">=</span><span class="s">&#34;...&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">picture</span><span class="p">&gt;</span>
</code></pre></div>
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<h1 class="bd-title" id="content">Reboot</h1>
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<p class="bd-lead">Reboot, a collection of element-specific CSS changes in a single file, kickstart Bootstrap to provide an elegant, consistent, and simple baseline to build upon.</p>
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
<h2 id="approach">Approach</h2>
<p>Reboot builds upon Normalize, providing many HTML elements with somewhat opinionated styles using only element selectors. Additional styling is done only with classes. For example, we reboot some <code>&lt;table&gt;</code> styles for a simpler baseline and later provide <code>.table</code>, <code>.table-bordered</code>, and more.</p>
<p>Here are our guidelines and reasons for choosing what to override in Reboot:</p>
<ul>
<li>Update some browser default values to use <code>rem</code>s instead of <code>em</code>s for scalable component spacing.</li>
<li>Avoid <code>margin-top</code>. Vertical margins can collapse, yielding unexpected results. More importantly though, a single direction of <code>margin</code> is a simpler mental model.</li>
<li>For easier scaling across device sizes, block elements should use <code>rem</code>s for <code>margin</code>s.</li>
<li>Keep declarations of <code>font</code>-related properties to a minimum, using <code>inherit</code> whenever possible.</li>
</ul>
<h2 id="page-defaults">Page defaults</h2>
<p>The <code>&lt;html&gt;</code> and <code>&lt;body&gt;</code> elements are updated to provide better page-wide defaults. More specifically:</p>
<ul>
<li>The <code>box-sizing</code> is globally set on every element—including <code>*::before</code> and <code>*::after</code>, to <code>border-box</code>. This ensures that the declared width of element is never exceeded due to padding or border.</li>
<li>No base <code>font-size</code> is declared on the <code>&lt;html&gt;</code>, but <code>16px</code> is assumed (the browser default). <code>font-size: 1rem</code> is applied on the <code>&lt;body&gt;</code> for easy responsive type-scaling via media queries while respecting user preferences and ensuring a more accessible approach.</li>
<li>The <code>&lt;body&gt;</code> also sets a global <code>font-family</code>, <code>line-height</code>, and <code>text-align</code>. This is inherited later by some form elements to prevent font inconsistencies.</li>
<li>For safety, the <code>&lt;body&gt;</code> has a declared <code>background-color</code>, defaulting to <code>#fff</code>.</li>
</ul>
<h2 id="native-font-stack">Native font stack</h2>
<p>The default web fonts (Helvetica Neue, Helvetica, and Arial) have been dropped in Bootstrap 4 and replaced with a &ldquo;native font stack&rdquo; for optimum text rendering on every device and OS. Read more about <a href="https://www.smashingmagazine.com/2015/11/using-system-ui-fonts-practical-guide/">native font stacks in this <em>Smashing Magazine</em> article</a>.</p>
<div class="highlight"><pre class="chroma"><code class="language-scss" data-lang="scss"><span class="nv">$font-family-sans-serif</span><span class="o">:</span>
<span class="c1">// Safari for macOS and iOS (San Francisco)</span>
<span class="o">-</span><span class="n">apple-system</span><span class="o">,</span>
<span class="c1">// Chrome &lt; 56 for macOS (San Francisco)</span>
<span class="n">BlinkMacSystemFont</span><span class="o">,</span>
<span class="c1">// Windows</span>
<span class="s2">&#34;Segoe UI&#34;</span><span class="o">,</span>
<span class="c1">// Android</span>
<span class="n">Roboto</span><span class="o">,</span>
<span class="c1">// Basic web fallback</span>
<span class="s2">&#34;Helvetica Neue&#34;</span><span class="o">,</span> <span class="n">Arial</span><span class="o">,</span>
<span class="c1">// Linux</span>
<span class="s2">&#34;Noto Sans&#34;</span><span class="o">,</span>
<span class="s2">&#34;Liberation Sans&#34;</span><span class="o">,</span>
<span class="c1">// Sans serif fallback</span>
<span class="no">sans-serif</span><span class="o">,</span>
<span class="c1">// Emoji fonts</span>
<span class="s2">&#34;Apple Color Emoji&#34;</span><span class="o">,</span> <span class="s2">&#34;Segoe UI Emoji&#34;</span><span class="o">,</span> <span class="s2">&#34;Segoe UI Symbol&#34;</span><span class="o">,</span> <span class="s2">&#34;Noto Color Emoji&#34;</span> <span class="nv">!default</span><span class="p">;</span>
</code></pre></div><p>Note that because the font stack includes emoji fonts, many common symbol/dingbat unicode characters will be rendered as multi-colored pictographs. Their appearance will vary, depending on the style used in the browser/platform&rsquo;s native emoji font, and they won&rsquo;t be affected by any CSS <code>color</code> styles.</p>
<p>This <code>font-family</code> is applied to the <code>&lt;body&gt;</code> and automatically inherited globally throughout Bootstrap. To switch the global <code>font-family</code>, update <code>$font-family-base</code> and recompile Bootstrap.</p>
<h2 id="headings-and-paragraphs">Headings and paragraphs</h2>
<p>All heading elements—e.g., <code>&lt;h1&gt;</code>—and <code>&lt;p&gt;</code> are reset to have their <code>margin-top</code> removed. Headings have <code>margin-bottom: .5rem</code> added and paragraphs <code>margin-bottom: 1rem</code> for easy spacing.</p>
<table>
<thead>
<tr>
<th>Heading</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<code>&lt;h1&gt;&lt;/h1&gt;</code>
</td>
<td><span class="h1">h1. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h2&gt;&lt;/h2&gt;</code>
</td>
<td><span class="h2">h2. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h3&gt;&lt;/h3&gt;</code>
</td>
<td><span class="h3">h3. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h4&gt;&lt;/h4&gt;</code>
</td>
<td><span class="h4">h4. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h5&gt;&lt;/h5&gt;</code>
</td>
<td><span class="h5">h5. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h6&gt;&lt;/h6&gt;</code>
</td>
<td><span class="h6">h6. Bootstrap heading</span></td>
</tr>
</tbody>
</table>
<h2 id="lists">Lists</h2>
<p>All lists—<code>&lt;ul&gt;</code>, <code>&lt;ol&gt;</code>, and <code>&lt;dl&gt;</code>—have their <code>margin-top</code> removed and a <code>margin-bottom: 1rem</code>. Nested lists have no <code>margin-bottom</code>.</p>
<div class="bd-example">
<ul>
<li>All lists have their top margin removed</li>
<li>And their bottom margin normalized</li>
<li>Nested lists have no bottom margin
<ul>
<li>This way they have a more even appearance</li>
<li>Particularly when followed by more list items</li>
</ul>
</li>
<li>The left padding has also been reset</li>
</ul>
<ol>
<li>Here&rsquo;s an ordered list</li>
<li>With a few list items</li>
<li>It has the same overall look</li>
<li>As the previous unordered list</li>
</ol>
</div>
<p>For simpler styling, clear hierarchy, and better spacing, description lists have updated <code>margin</code>s. <code>&lt;dd&gt;</code>s reset <code>margin-left</code> to <code>0</code> and add <code>margin-bottom: .5rem</code>. <code>&lt;dt&gt;</code>s are <strong>bolded</strong>.</p>
<div class="bd-example">
<dl>
<dt>Description lists</dt>
<dd>A description list is perfect for defining terms.</dd>
<dt>Term</dt>
<dd>Definition for the term.</dd>
<dd>A second definition for the same term.</dd>
<dt>Another term</dt>
<dd>Definition for this other term.</dd>
</dl>
</div>
<h2 id="preformatted-text">Preformatted text</h2>
<p>The <code>&lt;pre&gt;</code> element is reset to remove its <code>margin-top</code> and use <code>rem</code> units for its <code>margin-bottom</code>.</p>
<div class="bd-example">
<pre>
.example-element {
margin-bottom: 1rem;
}
</pre>
</div>
<h2 id="tables">Tables</h2>
<p>Tables are slightly adjusted to style <code>&lt;caption&gt;</code>s, collapse borders, and ensure consistent <code>text-align</code> throughout. Additional changes for borders, padding, and more come with <a href="/docs/4.6/content/tables/">the <code>.table</code> class</a>.</p>
<div class="bd-example">
<table>
<caption>
This is an example table, and this is its caption to describe the contents.
</caption>
<thead>
<tr>
<th>Table heading</th>
<th>Table heading</th>
<th>Table heading</th>
<th>Table heading</th>
</tr>
</thead>
<tbody>
<tr>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
</tr>
<tr>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
</tr>
<tr>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
<td>Table cell</td>
</tr>
</tbody>
</table>
</div>
<h2 id="forms">Forms</h2>
<p>Various form elements have been rebooted for simpler base styles. Here are some of the most notable changes:</p>
<ul>
<li><code>&lt;fieldset&gt;</code>s have no borders, padding, or margin so they can be easily used as wrappers for individual inputs or groups of inputs.</li>
<li><code>&lt;legend&gt;</code>s, like fieldsets, have also been restyled to be displayed as a heading of sorts.</li>
<li><code>&lt;label&gt;</code>s are set to <code>display: inline-block</code> to allow <code>margin</code> to be applied.</li>
<li><code>&lt;input&gt;</code>s, <code>&lt;select&gt;</code>s, <code>&lt;textarea&gt;</code>s, and <code>&lt;button&gt;</code>s are mostly addressed by Normalize, but Reboot removes their <code>margin</code> and sets <code>line-height: inherit</code>, too.</li>
<li><code>&lt;textarea&gt;</code>s are modified to only be resizable vertically as horizontal resizing often &ldquo;breaks&rdquo; page layout.</li>
<li><code>&lt;button&gt;</code>s and <code>&lt;input&gt;</code> button elements have <code>cursor: pointer</code> when <code>:not(:disabled)</code>.</li>
</ul>
<p>These changes, and more, are demonstrated below.</p>
<form class="bd-example">
<fieldset>
<legend>Example legend</legend>
<p>
<label for="input">Example input</label>
<input type="text" id="input" placeholder="Example input">
</p>
<p>
<label for="select">Example select</label>
<select id="select">
<option value="">Choose...</option>
<optgroup label="Option group 1">
<option value="">Option 1</option>
<option value="">Option 2</option>
<option value="">Option 3</option>
</optgroup>
<optgroup label="Option group 2">
<option value="">Option 4</option>
<option value="">Option 5</option>
<option value="">Option 6</option>
</optgroup>
</select>
</p>
<p>
<label>
<input type="checkbox" value="">
Check this checkbox
</label>
</p>
<p>
<label>
<input type="radio" name="optionsRadios" id="optionsRadios1" value="option1" checked>
Option one is this and that
</label>
<label>
<input type="radio" name="optionsRadios" id="optionsRadios2" value="option2">
Option two is something else that's also super long to demonstrate the wrapping of these fancy form controls.
</label>
<label>
<input type="radio" name="optionsRadios" id="optionsRadios3" value="option3" disabled>
Option three is disabled
</label>
</p>
<p>
<label for="textarea">Example textarea</label>
<textarea id="textarea" rows="3"></textarea>
</p>
<p>
<label for="date">Example date</label>
<input type="date" id="date">
</p>
<p>
<label for="time">Example time</label>
<input type="time" id="time">
</p>
<p>
<label for="output">Example output</label>
<output name="result" id="output">100</output>
</p>
<p>
<button type="submit">Button submit</button>
<input type="submit" value="Input submit button">
<input type="reset" value="Input reset button">
<input type="button" value="Input button">
</p>
<p>
<button type="submit" disabled>Button submit</button>
<input type="submit" value="Input submit button" disabled>
<input type="reset" value="Input reset button" disabled>
<input type="button" value="Input button" disabled>
</p>
</fieldset>
</form>
<h3 id="pointers-on-buttons">Pointers on buttons</h3>
<p>Reboot includes an enhancement for <code>role=&quot;button&quot;</code> to change the default cursor to <code>pointer</code>. Add this attribute to elements to help indicate elements are interactive. This role isn&rsquo;t necessary for <code>&lt;button&gt;</code> elements, which get their own <code>cursor</code> change.</p>
<div class="bd-example">
<span role="button" tabindex="0">Non-button element button</span>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">span</span> <span class="na">role</span><span class="o">=</span><span class="s">&#34;button&#34;</span> <span class="na">tabindex</span><span class="o">=</span><span class="s">&#34;0&#34;</span><span class="p">&gt;</span>Non-button element button<span class="p">&lt;/</span><span class="nt">span</span><span class="p">&gt;</span></code></pre></div>
<h2 id="misc-elements">Misc elements</h2>
<h3 id="address">Address</h3>
<p>The <code>&lt;address&gt;</code> element is updated to reset the browser default <code>font-style</code> from <code>italic</code> to <code>normal</code>. <code>line-height</code> is also now inherited, and <code>margin-bottom: 1rem</code> has been added. <code>&lt;address&gt;</code>s are for presenting contact information for the nearest ancestor (or an entire body of work). Preserve formatting by ending lines with <code>&lt;br&gt;</code>.</p>
<div class="bd-example">
<address>
<strong>Twitter, Inc.</strong><br>
1355 Market St, Suite 900<br>
San Francisco, CA 94103<br>
<abbr title="Phone">P:</abbr> (123) 456-7890
</address>
<address>
<strong>Full Name</strong><br>
<a href="mailto:first.last@example.com">first.last@example.com</a>
</address>
</div>
<h3 id="blockquote">Blockquote</h3>
<p>The default <code>margin</code> on blockquotes is <code>1em 40px</code>, so we reset that to <code>0 0 1rem</code> for something more consistent with other elements.</p>
<div class="bd-example">
<blockquote class="blockquote">
<p>A well-known quote, contained in a blockquote element.</p>
<footer>Someone famous in <cite title="Source Title">Source Title</cite></footer>
</blockquote>
</div>
<h3 id="inline-elements">Inline elements</h3>
<p>The <code>&lt;abbr&gt;</code> element receives basic styling to make it stand out amongst paragraph text.</p>
<div class="bd-example">
Nulla <abbr title="attribute">attr</abbr> vitae elit libero, a pharetra augue.
</div>
<h3 id="summary">Summary</h3>
<p>The default <code>cursor</code> on summary is <code>text</code>, so we reset that to <code>pointer</code> to convey that the element can be interacted with by clicking on it.</p>
<div class="bd-example">
<details>
<summary>Some details</summary>
<p>More info about the details.</p>
</details>
<details open>
<summary>Even more details</summary>
<p>Here are even more details about the details.</p>
</details>
</div>
<h2 id="html5-hidden-attribute">HTML5 <code>[hidden]</code> attribute</h2>
<p>HTML5 adds <a href="https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes/hidden">a new global attribute named <code>[hidden]</code></a>, which is styled as <code>display: none</code> by default. Borrowing an idea from <a href="https://purecss.io/">PureCSS</a>, we improve upon this default by making <code>[hidden] { display: none !important; }</code> to help prevent its <code>display</code> from getting accidentally overridden. While <code>[hidden]</code> isn&rsquo;t natively supported by IE10, the explicit declaration in our CSS gets around that problem.</p>
<div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">input</span> <span class="na">type</span><span class="o">=</span><span class="s">&#34;text&#34;</span> <span class="na">hidden</span><span class="p">&gt;</span>
</code></pre></div><div class="bd-callout bd-callout-warning">
<h5 id="jquery-incompatibility">jQuery incompatibility</h5>
<p><code>[hidden]</code> is not compatible with jQuery&rsquo;s <code>$(...).hide()</code> and <code>$(...).show()</code> methods. Therefore, we don&rsquo;t currently especially endorse <code>[hidden]</code> over other techniques for managing the <code>display</code> of elements.
</div>
<p>To merely toggle the visibility of an element, meaning its <code>display</code> is not modified and the element can still affect the flow of the document, use <a href="/docs/4.6/utilities/visibility/">the <code>.invisible</code> class</a> instead.</p>
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<li><a href="#global-settings">Global settings</a></li>
<li><a href="#headings">Headings</a>
<ul>
<li><a href="#customizing-headings">Customizing headings</a></li>
</ul>
</li>
<li><a href="#display-headings">Display headings</a></li>
<li><a href="#lead">Lead</a></li>
<li><a href="#inline-text-elements">Inline text elements</a></li>
<li><a href="#text-utilities">Text utilities</a></li>
<li><a href="#abbreviations">Abbreviations</a></li>
<li><a href="#blockquotes">Blockquotes</a>
<ul>
<li><a href="#naming-a-source">Naming a source</a></li>
<li><a href="#alignment">Alignment</a></li>
</ul>
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<h1 class="bd-title" id="content">Typography</h1>
</div>
<p class="bd-lead">Documentation and examples for Bootstrap typography, including global settings, headings, body text, lists, and more.</p>
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
<h2 id="global-settings">Global settings</h2>
<p>Bootstrap sets basic global display, typography, and link styles. When more control is needed, check out the <a href="/docs/4.6/utilities/text/">textual utility classes</a>.</p>
<ul>
<li>Use a <a href="/docs/4.6/content/reboot/#native-font-stack">native font stack</a> that selects the best <code>font-family</code> for each OS and device.</li>
<li>For a more inclusive and accessible type scale, we use the browser&rsquo;s default root <code>font-size</code> (typically 16px) so visitors can customize their browser defaults as needed.</li>
<li>Use the <code>$font-family-base</code>, <code>$font-size-base</code>, and <code>$line-height-base</code> attributes as our typographic base applied to the <code>&lt;body&gt;</code>.</li>
<li>Set the global link color via <code>$link-color</code> and apply link underlines only on <code>:hover</code>.</li>
<li>Use <code>$body-bg</code> to set a <code>background-color</code> on the <code>&lt;body&gt;</code> (<code>#fff</code> by default).</li>
</ul>
<p>These styles can be found within <code>_reboot.scss</code>, and the global variables are defined in <code>_variables.scss</code>. Make sure to set <code>$font-size-base</code> in <code>rem</code>.</p>
<h2 id="headings">Headings</h2>
<p>All HTML headings, <code>&lt;h1&gt;</code> through <code>&lt;h6&gt;</code>, are available.</p>
<table>
<thead>
<tr>
<th>Heading</th>
<th>Example</th>
</tr>
</thead>
<tbody>
<tr>
<td>
<code>&lt;h1&gt;&lt;/h1&gt;</code>
</td>
<td><span class="h1">h1. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h2&gt;&lt;/h2&gt;</code>
</td>
<td><span class="h2">h2. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h3&gt;&lt;/h3&gt;</code>
</td>
<td><span class="h3">h3. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h4&gt;&lt;/h4&gt;</code>
</td>
<td><span class="h4">h4. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h5&gt;&lt;/h5&gt;</code>
</td>
<td><span class="h5">h5. Bootstrap heading</span></td>
</tr>
<tr>
<td>
<code>&lt;h6&gt;&lt;/h6&gt;</code>
</td>
<td><span class="h6">h6. Bootstrap heading</span></td>
</tr>
</tbody>
</table>
<div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">h1</span><span class="p">&gt;</span>h1. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h2</span><span class="p">&gt;</span>h2. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h2</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h3</span><span class="p">&gt;</span>h3. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h3</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h4</span><span class="p">&gt;</span>h4. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h4</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h5</span><span class="p">&gt;</span>h5. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h5</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h6</span><span class="p">&gt;</span>h6. Bootstrap heading<span class="p">&lt;/</span><span class="nt">h6</span><span class="p">&gt;</span>
</code></pre></div><p><code>.h1</code> through <code>.h6</code> classes are also available, for when you want to match the font styling of a heading but cannot use the associated HTML element.</p>
<div class="bd-example">
<p class="h1">h1. Bootstrap heading</p>
<p class="h2">h2. Bootstrap heading</p>
<p class="h3">h3. Bootstrap heading</p>
<p class="h4">h4. Bootstrap heading</p>
<p class="h5">h5. Bootstrap heading</p>
<p class="h6">h6. Bootstrap heading</p>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h1&#34;</span><span class="p">&gt;</span>h1. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h2&#34;</span><span class="p">&gt;</span>h2. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h3&#34;</span><span class="p">&gt;</span>h3. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h4&#34;</span><span class="p">&gt;</span>h4. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h5&#34;</span><span class="p">&gt;</span>h5. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;h6&#34;</span><span class="p">&gt;</span>h6. Bootstrap heading<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span></code></pre></div>
<h3 id="customizing-headings">Customizing headings</h3>
<p>Use the included utility classes to recreate the small secondary heading text from Bootstrap 3.</p>
<div class="bd-example">
<h3>
Fancy display heading
<small class="text-muted">With faded secondary text</small>
</h3>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">h3</span><span class="p">&gt;</span>
Fancy display heading
<span class="p">&lt;</span><span class="nt">small</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;text-muted&#34;</span><span class="p">&gt;</span>With faded secondary text<span class="p">&lt;/</span><span class="nt">small</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">h3</span><span class="p">&gt;</span></code></pre></div>
<h2 id="display-headings">Display headings</h2>
<p>Traditional heading elements are designed to work best in the meat of your page content. When you need a heading to stand out, consider using a <strong>display heading</strong>—a larger, slightly more opinionated heading style. Keep in mind these headings are not responsive by default, but it&rsquo;s possible to enable <a href="#responsive-font-sizes">responsive font sizes</a>.</p>
<div class="bd-example bd-example-type">
<table class="table">
<tbody>
<tr>
<td><span class="display-1">Display 1</span></td>
</tr>
<tr>
<td><span class="display-2">Display 2</span></td>
</tr>
<tr>
<td><span class="display-3">Display 3</span></td>
</tr>
<tr>
<td><span class="display-4">Display 4</span></td>
</tr>
</tbody>
</table>
</div>
<div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">h1</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;display-1&#34;</span><span class="p">&gt;</span>Display 1<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h1</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;display-2&#34;</span><span class="p">&gt;</span>Display 2<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h1</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;display-3&#34;</span><span class="p">&gt;</span>Display 3<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">h1</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;display-4&#34;</span><span class="p">&gt;</span>Display 4<span class="p">&lt;/</span><span class="nt">h1</span><span class="p">&gt;</span>
</code></pre></div><h2 id="lead">Lead</h2>
<p>Make a paragraph stand out by adding <code>.lead</code>.</p>
<div class="bd-example">
<p class="lead">
This is a lead paragraph. It stands out from regular paragraphs.
</p>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;lead&#34;</span><span class="p">&gt;</span>
This is a lead paragraph. It stands out from regular paragraphs.
<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span></code></pre></div>
<h2 id="inline-text-elements">Inline text elements</h2>
<p>Styling for common inline HTML5 elements.</p>
<div class="bd-example">
<p>You can use the mark tag to <mark>highlight</mark> text.</p>
<p><del>This line of text is meant to be treated as deleted text.</del></p>
<p><s>This line of text is meant to be treated as no longer accurate.</s></p>
<p><ins>This line of text is meant to be treated as an addition to the document.</ins></p>
<p><u>This line of text will render as underlined</u></p>
<p><small>This line of text is meant to be treated as fine print.</small></p>
<p><strong>This line rendered as bold text.</strong></p>
<p><em>This line rendered as italicized text.</em></p>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span>You can use the mark tag to <span class="p">&lt;</span><span class="nt">mark</span><span class="p">&gt;</span>highlight<span class="p">&lt;/</span><span class="nt">mark</span><span class="p">&gt;</span> text.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">del</span><span class="p">&gt;</span>This line of text is meant to be treated as deleted text.<span class="p">&lt;/</span><span class="nt">del</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">s</span><span class="p">&gt;</span>This line of text is meant to be treated as no longer accurate.<span class="p">&lt;/</span><span class="nt">s</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">ins</span><span class="p">&gt;</span>This line of text is meant to be treated as an addition to the document.<span class="p">&lt;/</span><span class="nt">ins</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">u</span><span class="p">&gt;</span>This line of text will render as underlined<span class="p">&lt;/</span><span class="nt">u</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">small</span><span class="p">&gt;</span>This line of text is meant to be treated as fine print.<span class="p">&lt;/</span><span class="nt">small</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">strong</span><span class="p">&gt;</span>This line rendered as bold text.<span class="p">&lt;/</span><span class="nt">strong</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">em</span><span class="p">&gt;</span>This line rendered as italicized text.<span class="p">&lt;/</span><span class="nt">em</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span></code></pre></div>
<p><code>.mark</code> and <code>.small</code> classes are also available to apply the same styles as <code>&lt;mark&gt;</code> and <code>&lt;small&gt;</code> while avoiding any unwanted semantic implications that the tags would bring.</p>
<p>While not shown above, feel free to use <code>&lt;b&gt;</code> and <code>&lt;i&gt;</code> in HTML5. <code>&lt;b&gt;</code> is meant to highlight words or phrases without conveying additional importance while <code>&lt;i&gt;</code> is mostly for voice, technical terms, etc.</p>
<h2 id="text-utilities">Text utilities</h2>
<p>Change text alignment, transform, style, weight, and color with our <a href="/docs/4.6/utilities/text/">text utilities</a> and <a href="/docs/4.6/utilities/colors/">color utilities</a>.</p>
<h2 id="abbreviations">Abbreviations</h2>
<p>Stylized implementation of HTML&rsquo;s <code>&lt;abbr&gt;</code> element for abbreviations and acronyms to show the expanded version on hover. Abbreviations have a default underline and gain a help cursor to provide additional context on hover and to users of assistive technologies.</p>
<p>Add <code>.initialism</code> to an abbreviation for a slightly smaller font-size.</p>
<div class="bd-example">
<p><abbr title="attribute">attr</abbr></p>
<p><abbr title="HyperText Markup Language" class="initialism">HTML</abbr></p>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">abbr</span> <span class="na">title</span><span class="o">=</span><span class="s">&#34;attribute&#34;</span><span class="p">&gt;</span>attr<span class="p">&lt;/</span><span class="nt">abbr</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;&lt;</span><span class="nt">abbr</span> <span class="na">title</span><span class="o">=</span><span class="s">&#34;HyperText Markup Language&#34;</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;initialism&#34;</span><span class="p">&gt;</span>HTML<span class="p">&lt;/</span><span class="nt">abbr</span><span class="p">&gt;&lt;/</span><span class="nt">p</span><span class="p">&gt;</span></code></pre></div>
<h2 id="blockquotes">Blockquotes</h2>
<p>For quoting blocks of content from another source within your document. Wrap <code>&lt;blockquote class=&quot;blockquote&quot;&gt;</code> around any <abbr title="HyperText Markup Language">HTML</abbr> as the quote.</p>
<div class="bd-example">
<blockquote class="blockquote">
<p class="mb-0">A well-known quote, contained in a blockquote element.</p>
</blockquote>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">blockquote</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;mb-0&#34;</span><span class="p">&gt;</span>A well-known quote, contained in a blockquote element.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">blockquote</span><span class="p">&gt;</span></code></pre></div>
<h3 id="naming-a-source">Naming a source</h3>
<p>Add a <code>&lt;footer class=&quot;blockquote-footer&quot;&gt;</code> for identifying the source. Wrap the name of the source work in <code>&lt;cite&gt;</code>.</p>
<div class="bd-example">
<blockquote class="blockquote">
<p class="mb-0">A well-known quote, contained in a blockquote element.</p>
<footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
</blockquote>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">blockquote</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;mb-0&#34;</span><span class="p">&gt;</span>A well-known quote, contained in a blockquote element.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">footer</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote-footer&#34;</span><span class="p">&gt;</span>Someone famous in <span class="p">&lt;</span><span class="nt">cite</span> <span class="na">title</span><span class="o">=</span><span class="s">&#34;Source Title&#34;</span><span class="p">&gt;</span>Source Title<span class="p">&lt;/</span><span class="nt">cite</span><span class="p">&gt;&lt;/</span><span class="nt">footer</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">blockquote</span><span class="p">&gt;</span></code></pre></div>
<h3 id="alignment">Alignment</h3>
<p>Use text utilities as needed to change the alignment of your blockquote.</p>
<div class="bd-example">
<blockquote class="blockquote text-center">
<p class="mb-0">>A well-known quote, contained in a blockquote element.</p>
<footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
</blockquote>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">blockquote</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote text-center&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;mb-0&#34;</span><span class="p">&gt;</span>&gt;A well-known quote, contained in a blockquote element.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">footer</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote-footer&#34;</span><span class="p">&gt;</span>Someone famous in <span class="p">&lt;</span><span class="nt">cite</span> <span class="na">title</span><span class="o">=</span><span class="s">&#34;Source Title&#34;</span><span class="p">&gt;</span>Source Title<span class="p">&lt;/</span><span class="nt">cite</span><span class="p">&gt;&lt;/</span><span class="nt">footer</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">blockquote</span><span class="p">&gt;</span></code></pre></div>
<div class="bd-example">
<blockquote class="blockquote text-right">
<p class="mb-0">A well-known quote, contained in a blockquote element.</p>
<footer class="blockquote-footer">Someone famous in <cite title="Source Title">Source Title</cite></footer>
</blockquote>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">blockquote</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote text-right&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;mb-0&#34;</span><span class="p">&gt;</span>A well-known quote, contained in a blockquote element.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">footer</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;blockquote-footer&#34;</span><span class="p">&gt;</span>Someone famous in <span class="p">&lt;</span><span class="nt">cite</span> <span class="na">title</span><span class="o">=</span><span class="s">&#34;Source Title&#34;</span><span class="p">&gt;</span>Source Title<span class="p">&lt;/</span><span class="nt">cite</span><span class="p">&gt;&lt;/</span><span class="nt">footer</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">blockquote</span><span class="p">&gt;</span></code></pre></div>
<h2 id="lists">Lists</h2>
<h3 id="unstyled">Unstyled</h3>
<p>Remove the default <code>list-style</code> and left margin on list items (immediate children only). <strong>This only applies to immediate children list items</strong>, meaning you will need to add the class for any nested lists as well.</p>
<div class="bd-example">
<ul class="list-unstyled">
<li>This is a list.</li>
<li>It appears completely unstyled.</li>
<li>Structurally, it's still a list.</li>
<li>However, this style only applies to immediate child elements.</li>
<li>Nested lists:
<ul>
<li>are unaffected by this style</li>
<li>will still show a bullet</li>
<li>and have appropriate left margin</li>
</ul>
</li>
<li>This may still come in handy in some situations.</li>
</ul>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">ul</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;list-unstyled&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>This is a list.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>It appears completely unstyled.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>Structurally, it&#39;s still a list.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>However, this style only applies to immediate child elements.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>Nested lists:
<span class="p">&lt;</span><span class="nt">ul</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>are unaffected by this style<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>will still show a bullet<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>and have appropriate left margin<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">ul</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span><span class="p">&gt;</span>This may still come in handy in some situations.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">ul</span><span class="p">&gt;</span></code></pre></div>
<h3 id="inline">Inline</h3>
<p>Remove a list&rsquo;s bullets and apply some light <code>margin</code> with a combination of two classes, <code>.list-inline</code> and <code>.list-inline-item</code>.</p>
<div class="bd-example">
<ul class="list-inline">
<li class="list-inline-item">This is a list item.</li>
<li class="list-inline-item">And another one.</li>
<li class="list-inline-item">But they're displayed inline.</li>
</ul>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">ul</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;list-inline&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;list-inline-item&#34;</span><span class="p">&gt;</span>This is a list item.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;list-inline-item&#34;</span><span class="p">&gt;</span>And another one.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">li</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;list-inline-item&#34;</span><span class="p">&gt;</span>But they&#39;re displayed inline.<span class="p">&lt;/</span><span class="nt">li</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">ul</span><span class="p">&gt;</span></code></pre></div>
<h3 id="description-list-alignment">Description list alignment</h3>
<p>Align terms and descriptions horizontally by using our grid system&rsquo;s predefined classes (or semantic mixins). For longer terms, you can optionally add a <code>.text-truncate</code> class to truncate the text with an ellipsis.</p>
<div class="bd-example">
<dl class="row">
<dt class="col-sm-3">Description lists</dt>
<dd class="col-sm-9">A description list is perfect for defining terms.</dd>
<dt class="col-sm-3">Term</dt>
<dd class="col-sm-9">
<p>Definition for the term.</p>
<p>And some more placeholder definition text.</p>
</dd>
<dt class="col-sm-3">Another term</dt>
<dd class="col-sm-9">This definition is short, so no extra paragraphs or anything.</dd>
<dt class="col-sm-3 text-truncate">Truncated term is truncated</dt>
<dd class="col-sm-9">This can be useful when space is tight. Adds an ellipsis at the end.</dd>
<dt class="col-sm-3">Nesting</dt>
<dd class="col-sm-9">
<dl class="row">
<dt class="col-sm-4">Nested definition list</dt>
<dd class="col-sm-8">I heard you like definition lists. Let me put a definition list inside your definition list.</dd>
</dl>
</dd>
</dl>
</div><div class="highlight"><pre class="chroma"><code class="language-html" data-lang="html"><span class="p">&lt;</span><span class="nt">dl</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;row&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-3&#34;</span><span class="p">&gt;</span>Description lists<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-9&#34;</span><span class="p">&gt;</span>A description list is perfect for defining terms.<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-3&#34;</span><span class="p">&gt;</span>Term<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-9&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span>Definition for the term.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">p</span><span class="p">&gt;</span>And some more placeholder definition text.<span class="p">&lt;/</span><span class="nt">p</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-3&#34;</span><span class="p">&gt;</span>Another term<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-9&#34;</span><span class="p">&gt;</span>This definition is short, so no extra paragraphs or anything.<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-3 text-truncate&#34;</span><span class="p">&gt;</span>Truncated term is truncated<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-9&#34;</span><span class="p">&gt;</span>This can be useful when space is tight. Adds an ellipsis at the end.<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-3&#34;</span><span class="p">&gt;</span>Nesting<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-9&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dl</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;row&#34;</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dt</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-4&#34;</span><span class="p">&gt;</span>Nested definition list<span class="p">&lt;/</span><span class="nt">dt</span><span class="p">&gt;</span>
<span class="p">&lt;</span><span class="nt">dd</span> <span class="na">class</span><span class="o">=</span><span class="s">&#34;col-sm-8&#34;</span><span class="p">&gt;</span>I heard you like definition lists. Let me put a definition list inside your definition list.<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">dl</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">dd</span><span class="p">&gt;</span>
<span class="p">&lt;/</span><span class="nt">dl</span><span class="p">&gt;</span></code></pre></div>
<h2 id="responsive-font-sizes">Responsive font sizes</h2>
<p>As of v4.3.0, Bootstrap ships with the option to enable responsive font sizes, allowing text to scale more naturally across device and viewport sizes. <abbr title="Responsive font sizes">RFS</abbr> can be enabled by changing the <code>$enable-responsive-font-sizes</code> Sass variable to <code>true</code> and recompiling Bootstrap.</p>
<p>To support <abbr title="Responsive font sizes">RFS</abbr>, we use a Sass mixin to replace our normal <code>font-size</code> properties. Responsive font sizes will be compiled into <code>calc()</code> functions with a mix of <code>rem</code> and viewport units to enable the responsive scaling behavior. More about <abbr title="Responsive font sizes">RFS</abbr> and its configuration can be found on its <a href="https://github.com/twbs/rfs/tree/v8.0.4">GitHub repository</a>.</p>
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