tailwind_modern_aspect_ratio_api.html

<div>
    <!-- Utilty used: aspect-video -->
    <!-- You can also customize the aspect ratio by using arbitrary values like:
    aspect-[4/3] -->
    <iframe class="w-full aspect-video" src="https://www.youtube.com/embed/TwXilp2mUtE" title="YouTube video player" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>