HTML <option> tag at PNLdev

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<!DOCTYPE html>
<html>
  <body>
    <form action="/action_page.php" >
      <label for="cars">Search for your favorite car :</label>
      <select name="cars" id="cars">
        <optgroup label="Japanese cars:">
          <option value="Toyota">Toyota</option>
          <option value="Honda ">Honda</option>
          <option value="Mitsubishi ">Mitsubishi</option>
          <option value="Lexus ">Lexus</option>
        </optgroup>  
        <optgroup label="German cars:">
            <option value="Ford">Ford</option>
            <option value="Porsche ">Porsche</option>
            <option value="Folks ">Folks</option>
            <option value="Maybach ">Maybach</option>
        </optgroup>
      </select>
      <input type="submit" value="submit">
    </form>
  </body>
</html>