Blocks which contain video content have a main parent class «crumina-our-video». In order to run the video, you need to use a button, e.g:
<a href="https://www.youtube.com/watch?v=MBdVXkSdhwU" class="video-control js-popup-iframe"><svg class="woox-icon icon-play-button-5"><use xlink:href="svg-icons/sprites/icons.svg#icon-play-button-5"></use></svg></a>
class js-popup-iframe – is obligatory to perform popup action.
Attribute href='''' - we specify either any URL or path to some content, that will be opened in the popup window.