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- <title>Tabbed Content Without JavaScript</title>
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-<h1 id="tabbed-content-without-javascript">Tabbed Content Without JavaScript</h1>
-<p>2019-01-28</p>
-<p>Creating tabs is a fairly trivial and common practice in web design, but many times it requires JavaScript to properly implement. Fortunately it <em>is</em> possible to create tabbed content with only using CSS.</p>
-<p><img src="/public/images/tabbed-content.png" alt="Tabbed elements with only CSS" /></p>
-<p><a href="https://codepen.io/bradleytaunt/pen/abjmayw">Live CodePen Example</a></p>
-<hr/>
-<h2 id="the-html">The HTML</h2>
-<p>The skeleton for this component is fairly basic - we just need the following structure:</p>
-<ol>
-<li><p>Parent element for each tab item</p></li>
-<li><p>Default radio input</p></li>
-<li><p>Label linked to corresponding input</p></li>
-<li><p>Inner content associated with each tab item</p></li>
-</ol>
-<p>Full HTML for reference:</p>
-<pre><code>&#60;div class="tabs"&#62;
-
- &#60;div class="tab-item"&#62;
- &#60;input class="tab-input" type="radio" name="tabs" id="tab-1"&#62;
- &#60;label class="tab-label" for="tab-1"&#62;Tab 1&#60;&#47;label&#62;
- &#60;div class="tab-content"&#62;Content goes here&#60;&#47;div&#62;
- &#60;&#47;div&#62;
-
- &#60;div class="tab-item"&#62;
- &#60;input class="tab-input" type="radio" name="tabs" id="tab-2"&#62;
- &#60;label class="tab-label" for="tab-2"&#62;Tab 2&#60;&#47;label&#62;
- &#60;div class="tab-content"&#62;Content goes here&#60;&#47;div&#62;
- &#60;&#47;div&#62;
-
- &#60;div class="tab-item"&#62;
- &#60;input class="tab-input" type="radio" name="tabs" id="tab-3"&#62;
- &#60;label class="tab-label" for="tab-3"&#62;Tab 3&#60;&#47;label&#62;
- &#60;div class="tab-content"&#62;Content goes here&#60;&#47;div&#62;
- &#60;&#47;div&#62;
-
-&#60;&#47;div&#62;
-</code></pre>
-<h2 id="the-css">The CSS</h2>
-<p>First, we need to set each <code>input</code>, <code>label</code> and inner content into their own parent containers:</p>
-<pre><code>&#47;* Main parent that holds all contents *&#47;
-.tabs {
- height: 100%;
- min-height: 250px;
- position: relative;
-}
-
-&#47;* Each tab items (includes heading &#38; content) *&#47;
-.tab-item {
- display: inline;
-}
-</code></pre>
-<p>Next, we will hide the default <code>radio</code> input and design our labels to resemble a basic web tab element. The <code>z-index</code> property on the label is important for how we will be stacking our content on the z-axis (labels above inner content for example).</p>
-<pre><code>&#47;* Hide the default radio inputs *&#47;
-.tab-input {
- position: absolute;
- visibility: hidden;
-}
-
-&#47;* The main tab headings *&#47;
-.tab-label {
- background: white;
- box-shadow: inset 0 -4px 4px rgba(0,0,0,0.02);
- color: lightgrey;
- cursor: pointer;
- display: inline-block;
- font-weight: 600;
- margin: 0 5px 0 0;
- padding: 10px 20px;
- position: relative;
- text-align: center;
- z-index: 0;
-}
-</code></pre>
-<p>The main inner content of each tab needs to have an <code>absolute</code> position set as it&#8217;s default, since the one currently selected will switch to <code>relative</code> on mobile (more on that in a moment):</p>
-<pre><code>&#47;* The inner tab content *&#47;
-.tab-content {
- background: white;
- bottom: 0;
- box-shadow: 0 6px 8px rgba(0,0,0,0.02);
- left: 0;
- overflow: scroll;
- padding: 20px;
- position: absolute;
- right: 0;
- top: 50px;
- z-index: 0;
-}
-</code></pre>
-<p>The final step is just telling the browser to style both the <code>label</code> and inner content of the currently selected radio <code>input</code>:</p>
-<pre><code>&#47;* Style the currently selected tab label *&#47;
-.tab-input:checked + .tab-label {
- border: 1px solid #eee;
- border-bottom: 0;
- box-shadow: 0 -6px 8px rgba(0,0,0,0.02);
- color: #268bd2;
- z-index: 2;
-}
-
-&#47;* Show the currently selected tab content *&#47;
-.tab-input:checked ~ .tab-content {
- border: 1px solid #eee;
- z-index: 1;
-}
-</code></pre>
-<p>It&#8217;s as simple as that! For reference, here is the entire CSS file for easier access:</p>
-<pre><code>&#47;* Main parent that holds all contents *&#47;
-.tabs {
- height: 100%;
- min-height: 250px;
- position: relative;
-}
-
-&#47;* Each tab items (includes heading &#38; content) *&#47;
-.tab-item {
- display: inline;
-}
-
-&#47;* Hide the default radio inputs *&#47;
-.tab-input {
- position: absolute;
- visibility: hidden;
-}
-
-&#47;* The main tab headings *&#47;
-.tab-label {
- background: white;
- box-shadow: inset 0 -4px 4px rgba(0,0,0,0.02);
- color: lightgrey;
- cursor: pointer;
- display: inline-block;
- font-weight: 600;
- margin: 0 5px 0 0;
- padding: 10px 20px;
- position: relative;
- text-align: center;
- z-index: 0;
-}
-
-&#47;* The inner tab content *&#47;
-.tab-content {
- background: white;
- bottom: 0;
- box-shadow: 0 6px 8px rgba(0,0,0,0.02);
- left: 0;
- overflow: scroll;
- padding: 20px;
- position: absolute;
- right: 0;
- top: 50px;
- z-index: 0;
-}
-
-&#47;* Style the currently selected tab label *&#47;
-.tab-input:checked + .tab-label {
- border: 1px solid #eee;
- border-bottom: 0;
- box-shadow: 0 -6px 8px rgba(0,0,0,0.02);
- color: #268bd2;
- z-index: 2;
-}
-
-&#47;* Show the currently selected tab content *&#47;
-.tab-input:checked ~ .tab-content {
- border: 1px solid #eee;
- z-index: 1;
-}
-</code></pre>
-<h2 id="dont-forget-about-mobile">Don&#8217;t forget about mobile</h2>
-<p>With only a few extra lines of CSS we can ensure that our custom tabs will stack on top of each other and look solid on mobile devices:</p>
-<pre><code>@media(max-width:38em) {
- .tab-label {
- display: block;
- width: 100%;
- }
- .tab-content {
- display: none;
- }
- .tab-input:checked ~ .tab-content {
- bottom: auto;
- display: block;
- position: relative;
- top: auto;
- }
-}
-</code></pre>
-<h2 id="one-minor-caveat">One minor caveat</h2>
-<p>Even though I&#8217;m a pretty big fan of implementing tabs this way, there is a small drawback:</p>
-<p>The <code>height</code> of the inner content doesn&#8217;t grow dynamically since it defaults as <code>absolute</code>, so a <code>min-height</code> or <code>height</code> value is required on the parent element. This could become a problem in certain situations where you don&#8217;t have the luxury of setting a static height.</p>
-<p>Other than that, enjoy building some JavaScript-free tabs!</p>
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