How To Create Responsive Iframes - W3Schools

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How TO - Responsive Iframe ❮ Previous Next ❯

Learn how to create responsive iframes with CSS.

Responsive Iframes

Create an iframe that will keep the aspect ratio (4:3, 16:9, etc.) when resized:

What is aspect ratio? The aspect ratio of an element describes the proportional relationship between its width and its height. Two common video aspect ratios are 4:3 (the universal video format of the 20th century), and 16:9 (universal for HD television and European digital television, and for YouTube videos).

How To - Responsive Iframes

Step 1) Add HTML:

Use a container element, like <div>, and add the iframe inside of it:

Example

<div class="container"> <iframe class="responsive-iframe" src="https://www.youtube.com/embed/tgbNymZ7vqY"></iframe></div>
Step 2) Add CSS:

Add a percentage value for padding-top to maintain the aspect ratio of the container DIV. The following example will create an aspect ratio of 16:9, which is the default aspect ratio of YouTube videos.

Example 16:9 Aspect Ratio

.container { position: relative; overflow: hidden; width: 100%; padding-top: 56.25%; /* 16:9 Aspect Ratio (divide 9 by 16 = 0.5625) */}/* Then style the iframe to fit in the container div with full height and width */.responsive-iframe { position: absolute; top: 0; left: 0; bottom: 0; right: 0; width: 100%; height: 100%; } Try it Yourself »

Other aspect ratios:

Example 4:3 Aspect Ratio

.container { padding-top: 75%; /* 4:3 Aspect Ratio */} Try it Yourself »

Example 3:2 Aspect Ratio

.container { padding-top: 66.66%; /* 3:2 Aspect Ratio */} Try it Yourself »

Example 8:5 Aspect Ratio

.container { padding-top: 62.5%; /* 8:5 Aspect Ratio */} Try it Yourself »

Example 1:1 Aspect Ratio (Height and Width is Always Equal)

.container { padding-top: 100%; /* 1:1 Aspect Ratio */} Try it Yourself » ❮ Previous Next ❯ ★ +1 Sign in to track progress

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