Embed
Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device.
Embed on BootstrapExample
Rules are directly applied to <iframe>, <embed>, <video>, and
<object> elements; optionally use an explicit descendant class
.embed-responsive-item when you want to match the styling for other
attributes.
<div class="embed-responsive embed-responsive-16by9">
<iframe class="embed-responsive-item" src="https://www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen=""></iframe>
</div>
