Pen Settings

HTML

CSS

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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JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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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Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

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

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

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HTML

              
                <button id="toggleSlider">Toggle Slider</button>
<div class="row">
  <div class="slide">Lorem ipsum dolor sit amet, consectetur adipisicing elit. Enim minus repellat amet nobis hic dolores blanditiis inventore quo ex quaerat omnis accusantium adipisci velit laborum facilis culpa nemo ab placeat!Lorem ipsum dolor sit amet, consectetur adipisicing elit. Doloremque voluptates tempore optio est nihil earum neque atque vero voluptatibus deserunt. Doloribus error voluptatem non quo molestias quisquam repellat odio tempora.Lorem ipsum dolor sit amet, consectetur adipisicing elit. Temporibus culpa voluptate architecto deserunt nemo animi officiis debitis necessitatibus deleniti nobis pariatur doloribus facilis suscipit ipsa earum consectetur eligendi. Perspiciatis ratione. lorem</div>
</div>
              
            
!

CSS

              
                .row {
  border: 1px solid rgba(255, 0, 0, .7);
  width: 400px;
  overflow: hidden;
}

.slide {
  background-color: rgba(0, 255, 0, .3);
  padding: 5px;
  transition: .5s cubic-bezier(0, 1, 0.5, 1);
  transform: translateY(0);
}

.slide-up {
  transform: translateY(-100%);
}
              
            
!

JS

              
                var toggleButton = document.getElementById('toggleSlider'),
    slide = document.querySelector('.slide');

toggleButton.addEventListener('click', toggleSlider, false);

function toggleSlider() {
  if (slide.classList.contains('slide-up')) {
    slide.classList.remove('slide-up');
  } else {
    slide.classList.add('slide-up');
  }
}
              
            
!
999px

Console