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.

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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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Code Indentation


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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.

              <div id="demo" >
  <button @click="animate" >
    Click Me
  <div :class='(animated) ? "animated" : ""  ' >
    <div>Lorem ipsum dolor sit amet consectetur adipisicing elit. Autem quam omnis repellat! Porro, nesciunt eos, quidem maiores pariatur debitis ut sapiente molestiae sint impedit odit dolorem, autem quos nam ducimus?</div>
              div {
  transition: all 0.2s;
div.animated {
  background: #333;
  color: white;
  font-family: Arial;
  line-height: 2;
  padding: 10px;
  transition: all 0.2s;
              new Vue({
  el: "#demo",
  data: {
    animated: false,
  methods: {
    animate: function ()  {
      this.animated = !this.animated;
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