Pen Settings



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. You can use the CSS from another Pen by using it's URL and the proper URL extention.

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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.

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Add Packages

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Editor Settings

Code Indentation

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                <div class="box">
  CSS Custom Property


                .box {
  /* --box-margin은 정의되지 않았기 때문에 20px이 사용됩니다. */
  margin: var(--box-margin, 20px);
  /* --box-color가 정의되지 않았다면 --main-color 변수가 사용됩니다. */
  --main-color: gold;
  background: var(--box-color, var(--main-color));

  /* common style */
  width: 300px;
  font-size: 15px;