<html>
<body>
<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>
</body>
<!-- Mirrored from www.w3schools.com/tags/tryit.asp?filename=tryhtml_optgroup by HTTrack Website Copier/3.x [XR&CO'2014], Mon, 27 Jan 2020 02:59:21 GMT -->
</html>