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.

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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

              
                <form action="https://www.example.com" mehod="post" id="example-form" class="form-class">
 
   <h1>User Registration</h1>
   
   <h2>Create an Account:</h2>
   
   <!-- Plain Text Box with a VALUE -->
   <p>Please create an account with using the format "UM_Firstname".
   <p>
      Username:
      <input type="text" name="username" id="username_input" value="UM_" autofocus />
   </p>
   
   <!-- Password Input Box with MAXLENGTH and SIZE-->
   <p>
      Password:
      <input type="password" name="password" maxlength="10" size="10"/>
   </p>

   <hr />
   
   <h2>Subscribe to our Mailing List:</h2>
   
   <!-- Text Input Box with AUTOFOCUS and a PLACEHOLDER -->
   <p>
      E-mail:
      <input type="text" name="email" placeholder="you@site.com" autofocus/>
   </p>

   <!-- Textarea Input Box with COLS and ROWS -->
   <p>What interests you creatively?</p>
   <textarea name="comments" cols="6" rows="6" style="min-width:100%">
      My design interests are...
   </textarea>
   
</form>
              
            
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CSS

              
                
              
            
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JS

              
                
              
            
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999px

Console