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.

              <div class="settings">
  <div class="help">Play with the values below</div>
    <input id="overshoot" value="1">
    <input id="period" value="0.3">
  <div class="help help-bottom">(overshoot) (period)</div>
<div class="el"></div>
  background #1a1c1d
  color #888
  font-family monospace
  font-size 30px
  position absolute
  width 500px
  margin-left -250px
  left 50%
  top 50%
  margin-top -150px

  font-size 0.5em
    margin-left 15.5em
  background #37f
  width 130px
  height 130px
  border-radius 100%
  position absolute
  top 50%
  left 50%
  margin-left -65px
  margin-top -65px
  background transparent
  border none
  color #fff
  width 2.5em
  border-bottom 1px dotted #555
  text-align center
  padding 0
  margin 0
              var el=document.querySelector('.el');
var overshoot=1;
var period=0.3;
(function bounce(){


🕑 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 ..................