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---
layout: docs
title: Responsive helpers
+description: Create responsive video or slideshow embeds based on the width of the parent by creating an intrinsic ratio that scales on any device.
group: utilities
+toc: true
---
## Responsive embeds
-Allow browsers to determine video or slideshow dimensions based on the width of their containing block by creating an intrinsic ratio that will properly scale 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.
**Pro-Tip!** You don't need to include `frameborder="0"` in your `<iframe>`s as we override that for you.