Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device.
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.
<iframe>
<embed>
<video>
<object>
.embed-responsive-item
Wrap any embed like an <iframe> in a parent element with .embed-responsive and an aspect ratio. The .embed-responsive-item isn’t strictly required, but we encourage it.
.embed-responsive
<div class="embed-responsive embed-responsive-16by9"> <iframe class="embed-responsive-item" src="https://www.youtube.com/embed/hoRH32HYGHI" allowfullscreen=""></iframe> </div>
<!-- 21:9 aspect ratio --> <div class="embed-responsive embed-responsive-21by9"> <iframe class="embed-responsive-item" src="/portals/0/..."></iframe> </div> <!-- 16:9 aspect ratio --> <div class="embed-responsive embed-responsive-16by9"> <iframe class="embed-responsive-item" src="/portals/0/..."></iframe> </div> <!-- 4:3 aspect ratio --> <div class="embed-responsive embed-responsive-4by3"> <iframe class="embed-responsive-item" src="/portals/0/..."></iframe> </div> <!-- 1:1 aspect ratio --> <div class="embed-responsive embed-responsive-1by1"> <iframe class="embed-responsive-item" src="/portals/0/..."></iframe> </div>