<fieldset>
<legend>Select a maintenance drone:</legend>
<div>
<input type="radio" id="huey" name="drone" value="huey" checked />
<label for="huey">Huey</label>
</div>
<div>
<input type="radio" id="dewey" name="drone" value="dewey" />
<label for="dewey">Dewey</label>
</div>
<div>
<input type="radio" id="louie" name="drone" value="louie" />
<label for="louie">Louie</label>
</div>
</fieldset>