Use generated pseudo elements to make an element maintain the aspect ratio of your choosing. Perfect for responsively handling video or slideshow embeds based on the width of the parent.
Ratios on Bootstrap
<div class="ratio ratio-21x9">
<iframe src="https://www.youtube.com/embed/PrUxWZiQfy4?autohide=0&showinfo=0&controls=0"></iframe>
</div>
<div class="ratio ratio-16x9">
<iframe src="https://www.youtube.com/embed/PrUxWZiQfy4?autohide=0&showinfo=0&controls=0"></iframe>
</div>
Easily configure layout, styles, and preferences for your admin interface.