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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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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.

              <div class="overlay"><h1>OVERLAY</h1></div>
<div class="container">
    Lorem ipsum dolor <a href="#">sit amet</a>, consectetur adipisicing elit. Sequi, ullam necessitatibus aspernatur reprehenderit facilis. Quasi, deleniti, sit rerum ipsa quos dolor officiis omnis repudiandae nulla quibusdam accusantium ducimus blanditiis quam. Lorem ipsum dolor sit amet, consectetur adipisicing elit. Voluptate, voluptas magni deserunt dolor exercitationem ullam corrupti necessitatibus officia cum error <a href="#">saepe sunt soluta</a>. Iusto, dicta, aperiam soluta praesentium laudantium omnis.
              body {
  background-color: #F5F5F5;
  color: #555;
  font-size: 1.25em;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;

hr {
  margin: 50px 0;

.container {
  margin: 40px auto;
  max-width: 700px;
  background-color: white;
  padding: 2em;

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.25);
  z-index: 1;
  color: white;
  text-align: center;
  pointer-events: none;

.overlay h1 {
  font-size: 80px;
  /*    font-size: 2vw;*/

  line-height: 4;

a {
  color: deepPink;

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