fieldset optgroup
<form> <fieldset> <legend>health information</legend> height: <input type="text" /> weight: <input type="text" /> </fieldset> </form>
optgroup
<select> <optgroup label="Swedish Cars"> <option value ="volvo">Volvo</option> <option value ="saab">Saab</option> </optgroup> <optgroup label="German Cars"> <option value ="mercedes">Mercedes</option> <option value ="audi">Audi</option> </optgroup> </select>