Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs added here will be added as <link>s in order, and before the CSS in the editor. You can use the CSS from another Pen by using its URL and the proper URL extension.

+ add another resource


Babel includes JSX processing.

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.

+ add another resource


Add Packages

Search for and use JavaScript packages from npm here. By selecting a package, an import statement will be added to the top of the JavaScript editor for this package.


Auto Save

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

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.


                <style type="text/theme-movierecs">
   * { color: white; }
<h1>I am the main page</h1>
<div class="section">
  <div class="title">I am the main page, imagine I've been here a while. I follow a very simple style guide created a long time ago, I use things like class="section" instead of "section".</div>
  <div class="content">I have styles on various things I call names like "title", "content" and "description" and I am but one of a few hundred pages that follows this.</div>  
  <p class="description">My rules make assumptions about the meaning and use of these, they cooperate.</p>

<!-- This is some new content from another team I want to embed...-->
<section id="movierecs">
    /* If the component includes styles... */
    .title::before,.title::after {
    content: "\""; 
    padding-right: 1em;
    padding-left: 1em;

    .description {
    font-style: italic;
    color: gray;

    .content {
    border: 1em solid black;
    padding: 1em;
  <h1>Movie Recommendations</h1>
  <ul class="content">
    <li><span class="title">The Godfather</span> - 
      <span class="description">The aging patriarch of an organized crime dynasty transfers control of his clandestine empire to his reluctant son.</span>
    <li><span class="title">The Shawshank Redemption</span> - 
      <span class="description">Two imprisoned men bond over a number of years, finding solace and eventual redemption through acts of common decency.</span>




                html {
  background-color: black;
  color: white;

div {
  border: 1px solid black;
  padding: 1em;

.description {
    position: absolute;
    top: 0;
    right: 0;

.title {
  border-bottom: 0;
  font-weight: bold;
  color: yellow;



  function () {   
	  var pandoraBox = document.querySelector("#movierecs");