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.


                <div style="--gradient: linear-gradient(red, gold)"></div>
<div style="--gradient: radial-gradient(circle at left top,red, gold)"></div>
<div style="--gradient: conic-gradient(red, gold)"></div>
<div style="--gradient: repeating-linear-gradient(red, red 10%, gold 10%, gold 20%)"></div>
<div style="--gradient: repeating-radial-gradient(circle at left top, red, red 10px, gold 10px, gold 20px)"></div>
<div style="--gradient: repeating-conic-gradient(red, gold 20deg)"></div>
<div class="dotted" style="--gradient: radial-gradient(#ff8a00 35%, transparent 35%)"></div>
<div class="stripe" style="--gradient: repeating-linear-gradient(45deg, white 0%,white 7.5px,hotpink 7.5px,hotpink 15px,white 15px,white 22.5px,hotpink 22.5px,hotpink 30px)"></div>


                @import url("");

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;

body {
  width: 100vw;
  min-height: 100vh;
  font-family: "Exo", Arial, sans-serif;
  background-color: #222;
  color: #fff;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 36px 10px;
  padding: 10px 10px 36px;
  font-size: 1.5rem;
  place-content: center;

div {
  min-height: 40vh;
  border: 10px solid transparent;
  background-image: linear-gradient(#222, #222), var(--gradient);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  border-radius: 10px;
  position: relative;
  padding: 0 10px;

div::after {
  content: attr(style);
  font-size: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100%;
  line-height: 1.5;

.dotted {
  background-size: 2px 2px;