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authorBradley Taunt <bt@btxx.org>2024-06-06 08:05:12 -0400
committerBradley Taunt <bt@btxx.org>2024-06-06 08:05:12 -0400
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+<!doctype html>
+<html lang="en" id="top">
+<head>
+ <meta charset="utf-8">
+ <meta name="viewport" content="width=device-width, initial-scale=1">
+ <link rel="icon" href="data:,">
+ <title>Menu Toggle with Pure CSS</title>
+ <link href="https://bt.ht/atom.xml" type="application/atom+xml" rel="alternate" title="Atom feed for blog posts" />
+ <style>*{box-sizing:border-box;}body{font-family:sans-serif;margin:0 auto;max-width:650px;padding:1rem;}img{max-width:100%;}pre{overflow:auto;}table{text-align:left;width:100%;}</style>
+</head>
+
+<nav>
+ <a href="#menu">Menu &darr;</a>
+</nav>
+
+<main>
+<h1>Menu Toggle with Pure CSS</h1>
+<p>2020-10-19</p>
+<p>When thinking through navigation designs for mobile devices sometimes the best option is to store away the content behind a toggle button. This button would then display the menu items upon interaction. Let me show you how to create such an element with only CSS - no need for JavaScript today!</p>
+<h2>Before we begin</h2>
+<p>I would like to point out that the concept of "toggling" the main menu (even for mobile) is not always the best solution. If you're interested, you can take a look at a previous article I wrote explaining why: <a href="/hamburger-menu-alternative.html">Using Hamburger Menus? Try Sausage Links</a></p>
+<p>Now that we have mentioned possible pitfalls of relying so heavily on toggle menus, let's build one!</p>
+<h2>Our Final Product</h2>
+<p><img src="/public/images/menu-toggle-css.png" alt="Menu toggle made from pure CSS" /></p>
+<p><a href="https://codepen.io/bradleytaunt/pen/mdEEvEX">Live CodePen Example</a></p>
+<h2>The HTML</h2>
+<p>To implement this design you really don't need much in terms of HTML:</p>
+<ul>
+<li>A single <code>checkbox</code> input</li>
+<li>A <code>label</code> that corresponds to the <code>checkbox</code></li>
+<li>A <code>nav</code> element to house our unordered list items</li>
+</ul>
+<pre><code>&lt;!-- The checkbox input &amp; label partner --&gt;
+&lt;input type=&quot;checkbox&quot; id=&quot;menu-toggle&quot;&gt;
+&lt;label for=&quot;menu-toggle&quot;&gt;Menu&lt;/label&gt;
+
+&lt;!-- The navigation we wish to toggle --&gt;
+&lt;nav&gt;
+ &lt;ul&gt;
+ &lt;li&gt;&lt;a href=&quot;&quot;&gt;Home&lt;/a&gt;&lt;/li&gt;
+ &lt;li&gt;&lt;a href=&quot;&quot;&gt;About&lt;/a&gt;&lt;/li&gt;
+ &lt;li&gt;&lt;a href=&quot;&quot;&gt;Articles&lt;/a&gt;&lt;/li&gt;
+ &lt;li&gt;&lt;a href=&quot;&quot;&gt;Colophon&lt;/a&gt;&lt;/li&gt;
+ &lt;li&gt;&lt;a href=&quot;&quot;&gt;Contact&lt;/a&gt;&lt;/li&gt;
+ &lt;/ul&gt;
+&lt;/nav&gt;
+</code></pre>
+<p>That's it!</p>
+<h2>The CSS</h2>
+<p>The first thing we need to do is "hide" the <code>checkbox</code> input element. It's important to avoid using <code>display: none</code> or <code>visibility: hidden</code> in order to achieve this. Those CSS properties can negatively impact accessibility (specifically screen readers). So we will be relying on the <code>position</code>, <code>z-index</code> and <code>opacity</code> properties to help us out.</p>
+<pre><code>/* Set the input position to absolute, send it off screen with zero opacity */
+input[type=&quot;checkbox&quot;] {
+ left: -9999px;
+ opacity: 0;
+ position: absolute;
+}
+</code></pre>
+<p>Then we give our corresponding <code>label</code> a minor face-lift to make it appear more button-like:</p>
+<pre><code>/* Minor visual styling to make the label more button-y */
+label {
+ border: 1px solid currentColor;
+ border-radius: 4px;
+ cursor: pointer;
+ padding: 10px;
+}
+</code></pre>
+<p>For our main <code>nav</code> element, we want to set it's position to <code>absolute</code> in order to avoid any janky page rendering issues that might occur when toggling the menu:</p>
+<p>`
+</p>
+<pre><code>/* Set nav to absolute (avoids odd page rendering space pop-in) */
+nav {
+ opacity: 0;
+ position: absolute;
+ z-index: -2;
+}
+</code></pre>
+<p>The last step is to actually <em>show</em> the menu if the user toggles the <code>checkbox</code>:</p>
+<pre><code>/* Show nav when checkbox is checked */
+input[type=&quot;checkbox&quot;]:checked ~ nav {
+ opacity: 1;
+ z-index: 1;
+}
+</code></pre>
+<p>It might not look like much, but you now have a fully functional menu toggle - <strong>made with pure CSS</strong>! </p>
+<h2>With Great Power...</h2>
+<p>Although this design is very simple to implement, please remember to use these types of menus wisely. Just because you <em>can</em> do something, doesn't always mean you <em>should</em>.</p>
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