Pen Settings

HTML

CSS

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.

+ add another resource

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

Auto Save

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.

HTML

              
                <div id="helpUnderlay" class="help-underlay">
  <div id="helpModal" class="help-modal">
  <h1>Keyboard Shortcuts <span class="help-key"><span>?</span></span></h1>
    <div id="helpClose" class="help-close">&times;</div><!-- .help-close -->
    
    <div id="helpModalContent" class="help-modal-content">
      
      <div id="helpListWrap" class="help-list-wrap">

        <!--
             Each <ul> below creates a column, as long as each has a class of
             "help-list". Each <li> is a single key/definition pair.
             The extra nested <span> is to help keep the definitions lined up
             vertically, for aesthetic reasons.
             If you hate the extra <span>, just remove it from each key/def pair.
        -->

        <ul class="help-list">

          <li class="help-key-unit">
            <span class="help-key"><span>space</span></span>
            <span class="help-key-def">Page down</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>p</span></span>
            <span class="help-key-def">Print</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>r</span></span>
            <span class="help-key-def">Reload</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>o</span></span>
            <span class="help-key-def">Open file</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>s</span></span>
            <span class="help-key-def">Save</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>→</span></span> <span class="help-key-def">Next message</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>←</span></span>
            <span class="help-key-def">Previous message</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>n</span></span>
            <span class="help-key-def">New message</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>Alt-e</span></span>
            <span class="help-key-def">Empty bin</span></li>
          <li class="help-key-unit">
            <span class="help-key"><span>Ctrl-b</span></span>
            <span class="help-key-def">Block user</span>
          </li>

        </ul><!-- .help-list -->

        <ul class="help-list">

          <li class="help-key-unit">
            <span class="help-key"><span>q</span></span>
            <span class="help-key-def">Quit</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>Ctrl-l</span></span>
            <span class="help-key-def">Launch</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>5</span></span>
            <span class="help-key-def">Enable</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>u</span></span>
            <span class="help-key-def">Underline</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>w</span></span>
            <span class="help-key-def">Write to disk</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>f</span></span> <span class="help-key-def">Flotsam</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>j</span></span>
            <span class="help-key-def">Jetsam</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>Fn-s</span></span>
            <span class="help-key-def">Swim to shore</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>m</span></span>
            <span class="help-key-def">Make on the floor</span></li>
          <li class="help-key-unit">
            <span class="help-key"><span>k</span></span>
            <span class="help-key-def">Kill process</span>
          </li>

        </ul><!-- .help-list -->

        <ul class="help-list">

          <li class="help-key-unit">
            <span class="help-key"><span>g</span></span>
            <span class="help-key-def">Global warming</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>a</span></span>
            <span class="help-key-def">Ask question</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>y</span></span>
            <span class="help-key-def">Yonkers</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>b</span></span>
            <span class="help-key-def">Bold</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>d</span></span>
            <span class="help-key-def">Drive fast</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>Enter</span></span> <span class="help-key-def">Commit</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>TAB</span></span>
            <span class="help-key-def">Insert 4 spaces</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>i</span></span>
            <span class="help-key-def">Italics</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>x</span></span>
            <span class="help-key-def">Delete</span></li>
          <li class="help-key-unit">
            <span class="help-key"><span>Ctrl-z</span></span>
            <span class="help-key-def">Undo</span>
          </li>

        </ul><!-- .help-list -->

        <ul class="help-list">

          <li class="help-key-unit">
            <span class="help-key"><span>&</span></span>
            <span class="help-key-def">Merge</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>Alt-w</span></span>
            <span class="help-key-def">Wipe</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>$</span></span>
            <span class="help-key-def">Command</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>8</span></span>
            <span class="help-key-def">Race track</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>^</span></span>
            <span class="help-key-def">Jump</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>+</span></span> <span class="help-key-def">Increase</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>-</span></span>
            <span class="help-key-def">Decrease</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>*</span></span>
            <span class="help-key-def">Go wild</span>
          </li>
          <li class="help-key-unit">
            <span class="help-key"><span>[</span></span>
            <span class="help-key-def">Nudge left</span></li>
          <li class="help-key-unit">
            <span class="help-key"><span>]</span></span>
            <span class="help-key-def">Nudge right</span>
          </li>

        </ul><!-- .help-list -->


      </div><!-- .help-list-wrap -->

    </div><!-- .help-modal-content -->
  </div><!-- .help-modal -->
</div><!-- .help-underlay -->
              
            
!

CSS

              
                
              
            
!

JS

              
                
              
            
!
999px

Console