Embeds

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

About

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.

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

Example

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 - 图1

  1. <div class="embed-responsive embed-responsive-16by9">
  2. <iframe class="embed-responsive-item" src="https://www.youtube.com/embed/zpOULjyy-n8?rel=0" allowfullscreen></iframe>
  3. </div>

Aspect ratios

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

  1. <!-- 21:9 aspect ratio -->
  2. <div class="embed-responsive embed-responsive-21by9">
  3. <iframe class="embed-responsive-item" src="..."></iframe>
  4. </div>
  5. <!-- 16:9 aspect ratio -->
  6. <div class="embed-responsive embed-responsive-16by9">
  7. <iframe class="embed-responsive-item" src="..."></iframe>
  8. </div>
  9. <!-- 4:3 aspect ratio -->
  10. <div class="embed-responsive embed-responsive-4by3">
  11. <iframe class="embed-responsive-item" src="..."></iframe>
  12. </div>
  13. <!-- 1:1 aspect ratio -->
  14. <div class="embed-responsive embed-responsive-1by1">
  15. <iframe class="embed-responsive-item" src="..."></iframe>
  16. </div>

Within _variables.scss, you can change the aspect ratios you want to use. Here’s an example of the $embed-responsive-aspect-ratios list:

  1. $embed-responsive-aspect-ratios: (
  2. (21 9),
  3. (16 9),
  4. (4 3),
  5. (1 1)
  6. ) !default;