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Spinners
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Utilities
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Flex
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Float
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Image replacement
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Overflow
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Position
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Screen readers
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Shadows
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<a href="/docs/4.4/utilities/sizing/">
Sizing
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Spacing
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<li class="toc-entry toc-h2"><a href="#relative-to-the-parent">Relative to the parent</a></li>
<li class="toc-entry toc-h2"><a href="#relative-to-the-viewport">Relative to the viewport</a></li>
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<main class="col-md-9 col-xl-8 py-md-3 pl-md-5 bd-content" role="main">
<h1 class="bd-title" id="content">Sizing</h1>
<p class="bd-lead">Easily make an element as wide or as tall with our width and height utilities.</p>
<script async src="https://cdn.carbonads.com/carbon.js?serve=CKYIKKJL&placement=getbootstrapcom" id="_carbonads_js"></script>
<h2 id="relative-to-the-parent">Relative to the parent</h2>
<p>Width and height utilities are generated from the <code class="highlighter-rouge">$sizes</code> Sass map in <code class="highlighter-rouge">_variables.scss</code>. Includes support for <code class="highlighter-rouge">25%</code>, <code class="highlighter-rouge">50%</code>, <code class="highlighter-rouge">75%</code>, <code class="highlighter-rouge">100%</code>, and <code class="highlighter-rouge">auto</code> by default. Modify those values as you need to generate different utilities here.</p>
<div class="bd-example">
<div class="w-25 p-3" style="background-color: #eee;">Width 25%</div>
<div class="w-50 p-3" style="background-color: #eee;">Width 50%</div>
<div class="w-75 p-3" style="background-color: #eee;">Width 75%</div>
<div class="w-100 p-3" style="background-color: #eee;">Width 100%</div>
<div class="w-auto p-3" style="background-color: #eee;">Width auto</div>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><div</span> <span class="na">class=</span><span class="s">"w-25 p-3"</span> <span class="na">style=</span><span class="s">"background-color: #eee;"</span><span class="nt">></span>Width 25%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"w-50 p-3"</span> <span class="na">style=</span><span class="s">"background-color: #eee;"</span><span class="nt">></span>Width 50%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"w-75 p-3"</span> <span class="na">style=</span><span class="s">"background-color: #eee;"</span><span class="nt">></span>Width 75%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"w-100 p-3"</span> <span class="na">style=</span><span class="s">"background-color: #eee;"</span><span class="nt">></span>Width 100%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"w-auto p-3"</span> <span class="na">style=</span><span class="s">"background-color: #eee;"</span><span class="nt">></span>Width auto<span class="nt"></div></span></code></pre></figure>
<div class="bd-example">
<div style="height: 100px; background-color: rgba(255,0,0,0.1);">
<div class="h-25 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 25%</div>
<div class="h-50 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 50%</div>
<div class="h-75 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 75%</div>
<div class="h-100 d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height 100%</div>
<div class="h-auto d-inline-block" style="width: 120px; background-color: rgba(0,0,255,.1)">Height auto</div>
</div>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><div</span> <span class="na">style=</span><span class="s">"height: 100px; background-color: rgba(255,0,0,0.1);"</span><span class="nt">></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"h-25 d-inline-block"</span> <span class="na">style=</span><span class="s">"width: 120px; background-color: rgba(0,0,255,.1)"</span><span class="nt">></span>Height 25%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"h-50 d-inline-block"</span> <span class="na">style=</span><span class="s">"width: 120px; background-color: rgba(0,0,255,.1)"</span><span class="nt">></span>Height 50%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"h-75 d-inline-block"</span> <span class="na">style=</span><span class="s">"width: 120px; background-color: rgba(0,0,255,.1)"</span><span class="nt">></span>Height 75%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"h-100 d-inline-block"</span> <span class="na">style=</span><span class="s">"width: 120px; background-color: rgba(0,0,255,.1)"</span><span class="nt">></span>Height 100%<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"h-auto d-inline-block"</span> <span class="na">style=</span><span class="s">"width: 120px; background-color: rgba(0,0,255,.1)"</span><span class="nt">></span>Height auto<span class="nt"></div></span>
<span class="nt"></div></span></code></pre></figure>
<p>You can also use <code class="highlighter-rouge">max-width: 100%;</code> and <code class="highlighter-rouge">max-height: 100%;</code> utilities as needed.</p>
<div class="bd-example">
<svg class="bd-placeholder-img mw-100" width="100%" height="100" xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMidYMid slice" focusable="false" role="img" aria-label="Placeholder: Max-width 100%"><title>Placeholder</title><rect width="100%" height="100%" fill="#868e96" /><text x="50%" y="50%" fill="#dee2e6" dy=".3em">Max-width 100%</text></svg>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><img</span> <span class="na">src=</span><span class="s">"..."</span> <span class="na">class=</span><span class="s">"mw-100"</span> <span class="na">alt=</span><span class="s">"..."</span><span class="nt">></span></code></pre></figure>
<div class="bd-example">
<div style="height: 100px; background-color: rgba(255,0,0,0.1);">
<div class="mh-100" style="width: 100px; height: 200px; background-color: rgba(0,0,255,0.1);">Max-height 100%</div>
</div>
</div>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><div</span> <span class="na">style=</span><span class="s">"height: 100px; background-color: rgba(255,0,0,0.1);"</span><span class="nt">></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"mh-100"</span> <span class="na">style=</span><span class="s">"width: 100px; height: 200px; background-color: rgba(0,0,255,0.1);"</span><span class="nt">></span>Max-height 100%<span class="nt"></div></span>
<span class="nt"></div></span></code></pre></figure>
<h2 id="relative-to-the-viewport">Relative to the viewport</h2>
<p>You can also use utilities to set the width and height relative to the viewport.</p>
<figure class="highlight"><pre><code class="language-html" data-lang="html"><span class="nt"><div</span> <span class="na">class=</span><span class="s">"min-vw-100"</span><span class="nt">></span>Min-width 100vw<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"min-vh-100"</span><span class="nt">></span>Min-height 100vh<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"vw-100"</span><span class="nt">></span>Width 100vw<span class="nt"></div></span>
<span class="nt"><div</span> <span class="na">class=</span><span class="s">"vh-100"</span><span class="nt">></span>Height 100vh<span class="nt"></div></span></code></pre></figure>
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