Pen Settings

HTML

About HTML Preprocessors

HTML preprocessors can make writing HTML more powerful or convenient. For instance, Markdown is designed to be easier to write and read for text documents and you could write a loop in Pug.

Learn more · Versions

Adding Classes

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. So you don't have access to higher-up elements like the <html> tag. If you want to add classes there that can affect the whole document, this is the place to do it.

About the <head>

In CodePen, whatever you write in the HTML editor is what goes within the <body> tags in a basic HTML5 template. If you need things in the <head> of the document, put that code here.

!
Insecure Resource

The resource you are linking to is using the 'http' protocol, which may not work when the browser is using https.

CSS

About CSS Preprocessors

CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

Learn more · Versions

CSS Base

About CSS Base

It's a common practice to apply CSS to a page that styles elements such that they are consistent across all browsers. We offer two of the most popular choices: normalize.css and a reset. Or, choose Neither and nothing will be applied.

Vendor Prefixing

About Vendor Prefixing

To get the best cross-browser support, it is a common practice to apply vendor prefixes to CSS properties and values that require them to work. For instance -webkit- or -moz-.

We offer two popular choices: Autoprefixer (which processes your CSS server-side) and -prefix-free (which applies prefixes via a script, client-side).

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.

Powered by Algolia
About External Resources

You can apply CSS to your Pen from any stylesheet on the web. Just put a URL to it here and we'll apply it, in the order you have them, before the CSS in the Pen itself.

You can also link to another Pen here (use the .css URL Extension) and we'll pull the CSS from that Pen and include it. If it's using a matching preprocessor, use the appropriate URL Extension and we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

Learn more

+ add another resource

JavaScript

About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient.

Learn more · Versions

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.

Powered by Algolia
About External Resources

You can apply a script from anywhere on the web to your Pen. Just put a URL to it here and we'll add it, in the order you have them, before the JavaScript in the Pen itself.

If the script you link to has the file extension of a preprocessor, we'll attempt to process it before applying.

You can also link to another Pen here, and we'll pull the JavaScript from that Pen and include it. If it's using a matching preprocessor, we'll combine the code before preprocessing, so you can use the linked Pen as a true dependency.

Learn more

+ add another resource

Packages

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.

Powered by Algolia
About Packages

Using packages here is powered by esm.sh, which makes packages from npm not only available on a CDN, but prepares them for native JavaScript ESM usage.

All packages are different, so refer to their docs for how they work.

If you're using React / ReactDOM, make sure to turn on Babel for the JSX processing.

Behavior

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.

HTML 

              
                <div class="wrap">
  <div class="ao-logo">
    <div class="nucleus"><a href=""></a>
      <div class="proton"></div>
    </div>
    <div class="full-orbital"></div>
    <div class="full-orbital part one">
      <div class="electron-wrap">
        <div class="electron second hide"></div>
      </div>
    </div>
    <div class="full-orbital part two"></div> 
    <div class="electron"></div>
    <div class="circle-half"></div>
  </div>
  <h1>Atomic Object</h1>
</div>
!

CSS 

              
                @import compass

$black: #002225
$red: #ef3e42
$blue: #00aaa1
$background: #e3e7ea
$din: 'DINOT'

@font-face
  font-weight: normal
  font-style: normal
  font-family: 'DINOT'
  src: url('https://dl.dropboxusercontent.com/s/co82257jf1h0b2y/DINOT-Medium.otf?token_hash=AAFBvJFRXJDYyob24o31r2z7jQKpaI9jIMn9jw2xWTihjQ&dl=1')
  
=frames
  0%
    top: 175px
    left: 240px
  8.3%
    top: 130px
    left: 290px
  16.6%
    top: 67px
    left: 355px
  24.9%
    top: 6px
    left: 385px
  33.2%
    top: 20px
    left: 335px
  41.5%
    top: 52px
    left: 285px
  58.1%
    top: 180px
    left: 130px
  66.4%
    top: 220px
    left: 95px
  74.7%
    top: 275px
    left: 65px
  83%
    top: 260px
    left: 120px
  91.3%
    top: 214px
    left: 190px
  100%
    top: 175px
    left: 240px
    
body
  background: $background
  overflow-x: hidden

.wrap
  margin: 100px auto
  width: 1500px
  position: relative
  transform: scale(0.8)
  -webkit-transform: scale(0.8)
  -moz-transform: scale(0.8)
  .ao-logo
    margin: 0 auto
    width: 475px
    height: 500px
    padding-top: 25px
    position: relative
    float: left
    background: $background
    cursor: pointer
    .nucleus
      height: 160px
      width: 160px
      border: 45px solid $black
      margin: 0 auto
      border-radius: 50%
      position: relative
      z-index: 5
      background: $background
      .proton
        background: $red
        width: 25px
        height: 25px
        margin: 0 auto
        border-radius: 50%
        top: 43%
        position: relative
    .full-orbital
      width: 400px
      height: 60px
      border: 10px solid $red
      position: absolute
      z-index: 10
      border-radius: 300%
      top: 115px
      left: 28px
      transform: rotate(140deg)
      -webkit-transform: rotate(140deg)
      -moz-transform: rotate(140deg)
      &.part
        position: absolute
        z-index: 1
        border-color: $blue
        &.one
          top: 115px
          transform: rotate(77deg)
          -webkit-transform: rotate(77deg)
          -moz-transform: rotate(77deg)
        &.two
          transform: rotate(197deg)
          -webkit-transform: rotate(197deg)
          -moz-transform: rotate(197deg)
  
h1
  font-family: $din
  font-weight: normal
  text-transform: uppercase
  position: relative
  float: left
  font-size: 8rem
  margin-top: 50px
  color: $black
  
@-webkit-keyframes orbit
  +frames 
@-moz-keyframes orbit
  +frames
  
.electron
  background: $red
  width: 25px
  height: 25px
  margin: 0 auto
  border-radius: 50%
  top: 190px
  left: 212px
  position: absolute
  z-index: 10
  -webkit-animation: orbit
  -webkit-animation-duration: 3s
  -webkit-animation-iteration-count: infinite
  -webkit-animation-timing-function: cubic-bezier(0,0,1,1)
  -webkit-animation-play-state: running
  -moz-animation: orbit
  -moz-animation-duration: 3s
  -moz-animation-iteration-count: infinite
  -moz-animation-timing-function: cubic-bezier(0,0,1,1)
  -moz-animation-play-state: running
  
.electron-wrap
  left: 68px
  top: -111px
  position: relative
  -webkit-transform: rotate(42deg)
  -moz-transform: rotate(42deg)
    
.circle-half
  height: 80px
  width: 160px
  border: 45px solid $black
  margin: 0 auto
  border-radius: 160px 160px 0 0
  border-bottom: none
  position: absolute
  z-index: 5
  left: 74px
  top: 39px
  z-index: 10
  transform: rotate(-39deg)
  -webkit-transform: rotate(-39deg)
  -moz-transform: rotate(-39deg)
    
.hide
  display: none
.blue
  background: $blue
!

JS 

              
                $(document).ready(function() {
  $('.ao-logo').on('click', function() {
    $('.second').toggleClass('hide');
    $('.electron').toggleClass('blue');
  });
});
!
999px

Console