html pilih subselect
<select>
<optgroup label="Options 1">
<option>Option 1.1</option>
<option>Option 1.2</option>
</optgroup>
<optgroup label="Options 2">
<option>Option 2.1</option>
<option>Option 2.2</option>
</optgroup>
</select>
Swaggero_0