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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.

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Babel is required to process package imports. If you need a different preprocessor remove all packages first.

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.

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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

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                <a href="#">"The time has come," the Walrus said,<br />
"To talk of many things:<br />
Of shoes–and ships–and sealing-wax–<br />
Of cabbages–and kings–<br />
And why the sea is boiling hot–<br />
And whether pigs have wings."</a>


                a {
  background-size: 0% 25px;
  background-repeat: no-repeat;
  background-position: 0% 50%;
  transition: all 0.9s ease-in-out;
  background-image: linear-gradient(to right, #f7ff00 0%, tomato 100%);
  color: #000;

a:hover {
  background-position: 0% 50%;
  background-size: 100% 25px;
  -webkit-background-size: 100% 25px;

// Codepen Styles
body {
  max-width: 400px;
  margin: 30px auto;
  background: #eeeeee;
a {
  text-decoration: none;
  font-weight: bold;
  font-size: 20px;