Pen Settings

HTML

CSS

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

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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

Behavior

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.

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.

HTML

              
                <p>The gray wolf, also known as the <span class="tooltip" data-tooltip="some more information"><span class="tooltip-info">some more information </span>timber wolf</span> or western wolf, is a canine native to the wilderness and remote areas of Eurasia and <span class="tooltip" data-tooltip="some more information"><span class="tooltip-info">some more information  </span>North America</span>. It is the largest extant member of its family, with males averaging 43–45 kg (95–99 lb), and females 36–38.5 kg (79–85 lb). Like the red wolf, it is distinguished from other <span class="tooltip" data-tooltip="some more information"><span class="tooltip-info">some more information</span>Canis species</span> by its larger size and less pointed features, particularly on the ears and muzzle.</p>
              
            
!

CSS

              
                html {
  font-family: 'Lato';
  margin: 20px auto;
  line-height: 1.5;
  max-width: 600px;
  font-size: 1.25em;
}

span.tooltip {
  padding: 0px 5px;
  position: relative;
  background: #FFBB99;
  cursor: pointer;
}

.tooltip-info {
  position: absolute;
  top: -9999px;
  left: -9999px;
}

span.tooltip::before {
  content: attr(data-tooltip);
  position: absolute;
  top: 1.5em;
  font-size: 0.9em;
  padding: 1px 5px;
  display: none;
  color: white;
  background: rgba(0, 0, 0, 0.75);
  border-radius: 4px;
  transition: opacity 0.1s ease-out;
  z-index: 99;
  text-align: left;
}

span:hover::before {
  display: inline-block;
}
              
            
!

JS

              
                
              
            
!
999px

Console