CODE EXAMPLE FOR HTML

select option

<label for="cars">Cars</label>
    <select name="Cars" id="cars">
        <optgroup label="SUV">
            <option value="">Porsche Cayenne</option>
            <option value="">Lincoln Nautilus</option>
            <option value="">Mercedes-Benz GLB 2022</option>
            <option value="">BMW X3 2022</option>
            <option value="">Genesis GV80 2022</option> 
            <option value="">Mercedes-Benz GLS 2022</option>
        </optgroup>
        <optgroup label="Sports Car">
            <option value="">Ford Mustang</option>
            <option value="">Toyota GR Supra</option>
            <option value="">McLaren 7205</option>
            <option value="">Porsche 911</option>
            <option value="">Audi R8 V10</option>
            <option value="">Chevrolet Corvette Z06</option>
        </optgroup>
    </select>