Pen Settings

HTML

CSS

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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JavaScript

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.

+ add another resource

Packages

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.

Behavior

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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

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Visit your global Editor Settings.

HTML

              
                <div class="solid">
  <p>1px solid 一本線</p>
</div>
<div class="double">
  <p>4px double 二本線</p>
</div>
<div class="dashed">
  <p>2px dashed 破線</p>
</div>
<div class="dotted">
  <p>3px dotted 点線</p>
</div>
<div class="groove">
  <p>4px groove 3Dくぼみ線</p>
</div>
<div class="ridge">
  <p>4px ridge 3D隆起線</p>
</div>
<div class="inset">
  <p>4px inset 明暗くぼみ線</p>
</div>
<div class="outset">
  <p>4px outset 明暗隆起線</p>
</div>
              
            
!

CSS

              
                p{margin:0.5em;}
.solid{margin:10px;border:1px solid black;}
.double{margin:10px;border:4px double blue;}
.dashed{margin:10px;border:2px dashed limegreen;}
.dotted{margin:10px;border:3px dotted gold;}
.groove{margin:10px;border:4px groove orange;}
.ridge{margin:10px;border:4px ridge orange;}
.inset{margin:10px;border:4px inset red;}
.outset{margin:10px;border:4px outset red;}
              
            
!

JS

              
                
              
            
!
999px

Console