</section>
    

          <section class="demo demo--collapse">

            <button class="toggle" data-toggle-target="#demo-panel-opacity" aria-expanded="false">Opacity</button>
    
            <div id="demo-panel-opacity" class="toggle-panel toggle-panel--opacity" aria-hidden="true">
              <div class="toggle-panel-content">
                Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nos