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HTML

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CSS

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

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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-.

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JavaScript

About JavaScript Preprocessors

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

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Babel includes JSX processing.

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Packages

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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.

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HTML 

              
                <span class="intro"><div id="world"></div></span>
!

CSS 

              
                @import "compass/css3";

* {
  @include box-sizing(border-box);
  
  padding: 0;
  margin: 0;
}

body {
  background: #06121e;
  position: relative;
  text-align: center;
  font-family: Oswald, sans-serif;
  padding: 100px;
}

p {
  text-align: center;
  display: block;
  margin-top: 85px;
  
  &,
  a {
    color: #f9f9f9;
  }
}

.intro {
  position: relative;
  display: inline-block;
  font-size: 0;
  
  width: 120px;
  height: 120px;
  
  &:before {
    @include border-radius(50%);
    @include animation(intro-animation .75s cubic-bezier(.3, 1.8, .7, 1) normal forwards);
    
    content: " ";
    position: absolute;
    
    top: -48px;
    left: -48px;
    
    width: 200px;
    height: 200px;
    
    border: solid 8px #f9f9f9;
  }
}

#world {
  @include transform(translateZ(0));
  @include border-radius(50%);
  
  position: relative;
  display: inline-block;
  overflow: hidden;
  
  width: 120px;
  height: 120px;
  
  background: #2f7db4;
  
  &:before {
    @include box-shadow(inset -30px 0 0 -10px rgba(0, 0, 0, .3));
    @include border-radius(50%);
    
    content: " ";
    position: absolute;
    
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    
    background: transparent;
    
    z-index: 50;
  }
  
  &:after {
    @include border-radius(6px);
    @include animation(the-awesome-animation 14s linear 0s infinite);
    
    content: " ";
    position: absolute;
    
    top: 0px;
    left: 0px;
    
    width: 18px;
    height: 12px;
    
    background: none;
    z-index: 10;
  }
}

@include keyframes(the-awesome-animation) {
  0% {
    @include box-shadow((
      // Clouds
      -253px 16px 0 0 rgba(white, .8), 
      -213px 41px 0 1px rgba(white, .8), 
      -191px -1px 0 0 rgba(white, .8), 
      -160px 59px 0 -2px rgba(white, .8), 
      -226px 83px 0 3px rgba(white, .8), 
      -109px 32px 0 0 rgba(white, .8), 
      -90px 89px 0 1px rgba(white, .8), 
      -160px 110px 0 -2px rgba(white, .8), 
      
      -53px 16px 0 0 rgba(white, .8), 
      -13px 41px 0 1px rgba(white, .8), 
      9px -1px 0 0 rgba(white, .8), 
      40px 59px 0 -2px rgba(white, .8), 
      -26px 83px 0 3px rgba(white, .8), 
      91px 32px 0 0 rgba(white, .8), 
      110px 89px 0 1px rgba(white, .8), 
      40px 110px 0 -2px rgba(white, .8), 
      
      
      // Land
      0 10px 0 3px #81c763, 
      6px 10px 0 3px #81c763,  
      3px 20px 0 -4px #81c763,  
      3px 24px 0 -2px #81c763,  
      9px 24px 0 -2px #81c763,
       
      -20px 50px 0 -2px #81c763, 
      30px 78px 0 2px #81c763, 
      74px 108px 0 -2px #81c763,
      60px 32px 0 -3px #81c763, 
      85px 69px 0 0 #81c763, 
      100px 0 0 0 #81c763, 
      
      140px 42px 0 0 #81c763, 
      143px 32px 0 -4px #81c763,
      
      220px 10px 0 3px #81c763, 
      226px 10px 0 3px #81c763,  
      223px 20px 0 -4px #81c763,  
      223px 24px 0 -2px #81c763,  
      229px 24px 0 -2px #81c763,
       
      200px 50px 0 -2px #81c763, 
      250px 78px 0 2px #81c763, 
      294px 108px 0 -2px #81c763,
      280px 32px 0 -3px #81c763, 
      305px 69px 0 0 #81c763, 
      300px 0 0 0 #81c763, 
      
      360px 42px 0 0 #81c763, 
      363px 32px 0 -4px #81c763  
    )); 
  }
 
  100% {
    @include box-shadow((
      // Clouds
      -53px 16px 0 0 rgba(white, .8), 
      -13px 41px 0 1px rgba(white, .8), 
      9px -1px 0 0 rgba(white, .8), 
      40px 59px 0 -2px rgba(white, .8), 
      -26px 83px 0 3px rgba(white, .8), 
      91px 32px 0 0 rgba(white, .8), 
      110px 89px 0 1px rgba(white, .8), 
      40px 110px 0 -2px rgba(white, .8), 
           
      147px 16px 0 0 rgba(white, .8), 
      187px 41px 0 1px rgba(white, .8), 
      209px -1px 0 0 rgba(white, .8), 
      240px 59px 0 -2px rgba(white, .8), 
      174px 83px 0 3px rgba(white, .8), 
      291px 32px 0 0 rgba(white, .8), 
      310px 89px 0 1px rgba(white, .8), 
      240px 110px 0 -2px rgba(white, .8), 
      
      
      // Land
      -220px 10px 0 3px #81c763, 
      -214px 10px 0 3px #81c763,  
      -217px 20px 0 -4px #81c763,  
      -217px 24px 0 -2px #81c763,  
      -211px 24px 0 -2px #81c763,
       
      -240px 50px 0 -2px #81c763, 
      -190px 78px 0 2px #81c763, 
      -146px 108px 0 -2px #81c763,
      -160px 32px 0 -3px #81c763, 
      -135px 69px 0 0 #81c763, 
      -120px 0 0 0 #81c763, 
      
      -80px 42px 0 0 #81c763, 
      -77px 32px 0 -4px #81c763,
      
      0 10px 0 3px #81c763, 
      6px 10px 0 3px #81c763,  
      3px 20px 0 -4px #81c763,  
      3px 24px 0 -2px #81c763,  
      9px 24px 0 -2px #81c763,
       
      -20px 50px 0 -2px #81c763, 
      30px 78px 0 2px #81c763, 
      74px 108px 0 -2px #81c763,
      60px 32px 0 -3px #81c763, 
      85px 69px 0 0 #81c763, 
      100px 0 0 0 #81c763, 
      
      140px 42px 0 0 #81c763, 
      143px 32px 0 -4px #81c763
    )); 
  }
}

@include keyframes(intro-animation) {
  0% {
    @include scale(0);    
  }
  
  100% {
    @include scale(1);    
  }
}
!

JS 

              
                /* 
The earth in a single HTML element!
Made by Kevin Jannis (@kevinjannis)
View more at www.janniskev.in 
*/
!
999px

Console