<form action="#">
    <fieldset class="options">
        <legend>Radio</legend>
        <ul>
            <li><label for="radio1"><input id="radio1" name="radio" type="radio" class="radio" checked="checked"> Option 1</label></li>
            <li><label for="radio2"><input id="radio2" name="radio" type="radio" class="radio"> Option 2</label></li>
            <li><label for="radio3"><input id="radio3" name="radio" type="radio" class="radio"> Option 3</label></li>
        </ul>
    </fieldset>
</form>