Keep the YouTube player proportional, give it an accessible title, and use only current provider parameters.
A responsive CMS Max YouTube embed can use a 16:9 aspect-ratio container with a full-size iframe and the standard youtube.com/embed video URL.
Responsive embed example
<div class="aspect-video w-full">
<iframe class="h-full w-full" src="https://www.youtube.com/embed/VIDEO_ID" title="Descriptive video title" loading="lazy" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share" allowfullscreen></iframe>
</div>Implementation checklist
- Replace VIDEO_ID with the exact video identifier, not the complete watch URL.
- Write a title that identifies the video content.
- Keep the player large enough for YouTube controls and captions.
- Use privacy and consent behavior appropriate for the site and jurisdiction.
- Check current parameters in YouTube Embedded Players and Player Parameters.