cssAudio - Activefile-genericCSS - ActiveGeneric - ActiveHTML - ActiveImage - ActiveJS - ActiveSVG - ActiveText - Activefile-genericVideo - ActiveLovehtmlicon-new-collectionicon-personicon-teamlog-outoctocatpop-outspinnerstartv

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.

+ add another resource

You're using npm packages, so we've auto-selected Babel for you here, which we require to process imports and make it all work. If you need to use a different JavaScript preprocessor, remove the packages in the npm tab.

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

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.

⚠️ This feature can only be used by logged in users.

Code Indentation


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.

              <!-- This demo uses flex grid but you can use float grid too -->

<div class="row">
  <div class="columns">
    <p>To make a set of breadcrumb links, just add the class <code>.breadcrumbs</code> to a <code>&lt;ul&gt;</code>, and then add links inside of the <code>&lt;li&gt;</code> elements. The current page doesn't require a link or a class, but you should add some explanatory text for AT that indicates which item is the current page.</p>
    <p>To mark a disabled item, add the class <code>.disabled</code> to the <code>&lt;li&gt;</code>, and just use plain text instead of a link.</p>
    <div class="warning callout">
      <p>We use a CSS <code>::after</code> element containing a slash character to create the separator between items. Some screen readers will read this character out loud—if this is an issue, you can use a background image or a separate element with <code>aria-hidden="true"</code> to create the separator instead.</p>

<div class="row">
  <div class="columns">
    <nav aria-label="You are here:" role="navigation">
      <ul class="breadcrumbs">
        <li><a href="#0">Home</a></li>
        <li><a href="#0">Features</a></li>
        <li class="disabled">Gene Splicing</li>
          <span class="show-for-sr">Current: </span> Cloning
              /* Demo Styles */

body {
  padding: 2rem 1rem;
🕑 One or more of the npm packages you are using needs to be built. You're the first person to ever need it! We're building it right now and your preview will start updating again when it's ready.
Loading ..................