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. You can use the CSS from another Pen by using it's URL and the proper URL extention.

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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.

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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.


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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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Visit your global Editor Settings.


                <div class="wrapper">
  <h1 contenteditable aria-label="I'm an editable empty h1!"></h1>
  <div contenteditable aria-label="And I'm an empty div"></div>
  <h2 contenteditable aria-label="Subtitle">I'm an editable h2. Try deleting me.</h2>
  <div contenteditable aria-label="Content">And I'm an editable div with some space ipsum. The Earth was small, light blue, and so touchingly alone, our home that must be defended like a holy relic. The Earth was absolutely round. I believe I never knew what the word round meant until I saw Earth from space</div>


*:after {
  box-sizing: border-box;

body {
  padding: 30px;
  background: #F3F6F8;
  line-height: 1.5;

.wrapper {
  max-width: 700px;
  margin: 0 auto;

[contenteditable] {
  margin: 5px;
  padding: 30px;
  outline: 0;
  &:empty {
    box-shadow: inset 0 0 0 1px #E9EFF3;
    background: #fff;

    &:before {
      content: attr(aria-label) ;
      color: #C8D7E1;
  &:focus {
    box-shadow: inset 0 0 0 2px #0085BE;
    background: #fff;