YouTube video
Man Rides Bike
The HTML markup:
<div class="iframe-wrapper"> <iframe width="640" height="auto" src="https://www.youtube.com/embed/Jl6v_wcSFZ0?si=156PQ60hTMcBJ-Ki" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe> </div>
YouTube provides an 'Embed' option for copying and pasting into a web page. It's best to put the 'embed' inside <div class="iframe-wrapper"> with </div> at the end. This should ensure the video is properly centred and full width as "640" and height as "auto".
See information