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Pen Settings

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

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You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

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Use npm Packages

We can make npm packages available for you to use in your JavaScript. We use webpack to prepare them and make them available to import. We'll also process your JavaScript with Babel.

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Code Indentation


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Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

HTML Settings

Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

              <div class="togglebox">
  <input id="toggle1" type="checkbox" name="toggle" />
  <label for="toggle1">Label 1</label>
  <section id="content1">
    <p><span>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Ab ea veritatis cumque unde dolore quasi hic praesentium, in consequatur, incidunt alias iure illum facilis qui odit excepturi tenetur, error eligendi.</span><span>Accusamus quasi eveniet dolorem, nihil cupiditate, facilis id quas consectetur mollitia quod minima excepturi maiores. A, molestias suscipit sunt provident libero magnam quas dolores aspernatur totam tenetur vel quis. Officia?</span></p>
  <input id="toggle2" type="checkbox" name="toggle" />
  <label for="toggle2">Label 2</label>
  <section id="content2">
    <p>Lorem ipsum dolor sit amet, consectetur adipisicing elit. Autem tempora quia fugit eveniet nostrum amet quod aliquid repellendus sint. Adipisci voluptas ratione doloremque delectus vel nemo cumque autem beatae minus.</p>
  <input id="toggle3" type="checkbox" name="toggle" />
  <label for="toggle3">Label 3</label>
  <section id="content3">
    <img src="https://unsplash.it/600/150?number=200" alt="" />
              // Visually hide checkbox buttons
input[type="checkbox"] {
  position: absolute;
  opacity: 0;
  &:focus + label {
    color: black;
    background-color: wheat;

// Style label/entry for accordion
label {
  position: relative;
  display: block;
  cursor: pointer;
  background: #c69;
  color: white;
  padding: .5em;
  border-bottom: 1px solid white;

// Style accordion content
section {
  height: 0;
  transition: .3s all;
  overflow: hidden;

// Open content when clicking label
#toggle1:checked ~ #content1,
#toggle2:checked ~ #content2,
#toggle3:checked ~ #content3,
#toggle4:checked ~ #content4 {
  // set height for transition duration to work
  // (also can set to auto without transition)
  height: 150px;

// just some styling

body {
  font-family: monospace;
  font-size: 1.5;

p {
  padding: 0 2em

.togglebox {
  margin: 0 auto;
  width: 50%;
  border: 1px solid #c69;
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