How to add A disabled option-group

Optgroup Example. A disabled option-group.

index.html

Example: HTML

 <select>
  <optgroup label="German Cars" disabled>
    <option value="mercedes">Mercedes</option>
    <option value="audi">Audi</option>
  </optgroup>
</select>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Attribute
Uploaded by:	Admin