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About CSS Preprocessors

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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About JavaScript Preprocessors

JavaScript preprocessors can help make authoring JavaScript easier and more convenient. For instance, CoffeeScript can help prevent easy-to-make mistakes and offer a cleaner syntax and Babel can bring ECMAScript 6 features to browsers that only support ECMAScript 5.

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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.

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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.

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HTML

            
              <section id="glow">
  <p>N</p>
  <p>E</p>
  <p>O</p>
  <p>N</p>
  <span>&mdash;</span>
  <p>L</p>
  <p>I</p>
  <p>G</p>
  <p>H</p>
  <p>T</p>
  <p>S</p>
</section>
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CSS

            
              @import url(https://fonts.googleapis.com/css?family=Wire+One);

body {
  background-color: #222;
  background-image: -webkit-radial-gradient(circle, #333, #222, #111);
  background-attachment: fixed;
  overflow: hidden;
  
  font-family: 'Wire One', sans-serif;
  font-size: 6em;
  color: #FFF;
  line-height: normal;
  text-align: center;
}

#glow {
  position: absolute;
  top: 0;
  bottom: 0;
  width: 100%;
  height: 1em;
  margin: auto;
  display: block;
}
#glow p,
#glow span{
  display: inline-block;
  
  color: #FFF;
  text-shadow: 0 0 15px;
}
#glow p:nth-child(odd) {
  -webkit-animation: bglow .3s ease infinite;
}
#glow p:nth-child(even) {
  -webkit-animation: rglow .3s ease infinite;
}

@-webkit-keyframes bglow {
  0% {
    color: rgb(0, 135, 211);
    text-shadow: 0 0 15px;
  }
}
@-webkit-keyframes rglow {
  100% {
    color: rgb(233, 54, 40);
    text-shadow: 0 0 15px;
  }
}
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