Show Output
<!DOCTYPE html> <html lang="en"> <head> <title>Example of HTML optgroup tag</title> </head> <body> <form> <select> <optgroup label="Sports cars"> <option value="ferrari">Ferrari</option> <option value="lamborghini">Lamborghini</option> </optgroup> <optgroup label="Luxury cars"> <option value="mercedes">Mercedes</option> <option value="bentley">Bentley</option> </optgroup> </select> </form> </body> </html>
