Codes :
<label for=”breakfast”>早餐</label>
<select id=”breakfast” name=”breakfast”>
<optgroup label=”中式”></optgroup> <option value=”c1″>饅頭</option> <option value=”c2″>燒餅</option> <option value=”c3″>油條</option> <optgroup label=”西式”></optgroup> <option value=”w1″>鬆餅</option> <option value=”w2″>漢堡</option> <option value=”w3″>薯條</option>
</select>
Live Demo :