Pen Settings



CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URLs 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 its URL and the proper URL extension.

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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

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.


Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

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

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.


                <!DOCTYPE html>
  <b>This text is bold(テキストが太字で表示されます。)</b>
  <strong>This text is strong(これは、強い意味があるときに使用します。)</strong>
  <i>This text is italic(これはイタリックテキストで表示されます。)</i>
  <em>This text is emphasized(これは強調されたテキストを表示します。)</em>
  <small>This text is small font-size(これは、フォントのサイズが小さく表示されます。</small>
  <mark>This element is mark text(この要素は、テキストにマークが表示されます。</mark>
  <ins>This element is represent inserted (added) text(これはテキストに下線が表示されます。)</ins>
  This is <sub>subscripted</sub> text(これは、テキストを下に少しずらし表示されます。)
  This is <sup>superscripted</sup> text(これは、テキストを少し上にずらし表示されます。)