<ul class="collapsible" data-collapsible="accordion">
    <li>
        <div class="collapsible-header">Primera</div>
        <div class="collapsible-body"><span>Lorem ipsum dolor sit amet.</span></div>
    </li>
    <li>
        <div class="collapsible-header">Segunda</div>
        <div class="collapsible-body"><span>Lorem ipsum dolor sit amet.</span></div>
    </li>
    <li>
        <div class="collapsible-header">Tercera</div>
        <div class="collapsible-body"><span>Lorem ipsum dolor sit amet.</span></div>
    </li>
</ul>