HTML

<section class="video-multi">
            
                <h2 class="u-visuallyhidden">Video Playlist</h2>
            
                <div class="video-multi__iframe-wrapper">
                  <iframe class="video-multi__iframe" src="https://www.youtube.com/embed/videoseries?list=PLCgtJxzC5vXYoph_abIuWFCGQnwP3nubv&amp;rel=0" allowfullscreen></iframe>
                </div>
            
            </section> <!-- .video-multi -->