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A Pen By yukifujinami

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About CSS Preprocessors

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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

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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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HTML

            
              <div class="hover-sample">
  マウスをあててみて
</div>
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CSS

            
              .hover-sample{
  background-color:red;
  width:300px;
  text-align:center;
  padding:20px;
  color:#ffffff;
  transition: background-color 0.3s ease-out 0.3s;
}

.hover-sample:hover{
  background-color:blue;
}
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JS
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999px
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Console