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Embeds

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Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device.

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About

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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.

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Pro-Tip! You don’t need to include frameborder="0" in your <iframe>s as we override that for you.

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Example

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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.

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<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>
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Aspect ratios

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Aspect ratios can be customized with modifier classes. By default the following ratio classes are provided:

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<!-- 21:9 aspect ratio -->
+<div class="embed-responsive embed-responsive-21by9">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
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+<!-- 16:9 aspect ratio -->
+<div class="embed-responsive embed-responsive-16by9">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
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+<!-- 4:3 aspect ratio -->
+<div class="embed-responsive embed-responsive-4by3">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
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+<!-- 1:1 aspect ratio -->
+<div class="embed-responsive embed-responsive-1by1">
+  <iframe class="embed-responsive-item" src="..."></iframe>
+</div>
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Within _variables.scss, you can change the aspect ratios you want to use. Here’s an example of the $embed-responsive-aspect-ratios list:

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$embed-responsive-aspect-ratios: (
+  (21 9),
+  (16 9),
+  (4 3),
+  (1 1)
+) !default;
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