YouTube video example
(with sound)
Embedded, responsive.
Markup:
<div class="iframe-wrapper"> <iframe width="740" height="auto" src="https://www.youtube.com/embed/Jl6v_wcSFZ0" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> </div>
(1) Copy the 'embed' markup from the YouTube page for the video.
(2) Edit width and height as shown.
(3) Enclose the 'embed' markup in a <div> with the class "iframe-wrapper".
(4) Add to a page and either 'Create new page' or 'Update page'.
