Test HTML element for wix support

Hello, this is the example iFrame code for the HTML element test.

<iframe width="100%" height="450" src="https://www.youtube.com/embed/K3GEm_qE9Jg?si=uQXfrnpIGSj2-cTF" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>