Skip to content

Responsive YouTube Video Embeds

How to embed a YouTube video in your site and have it responsive, so it scales down on a mobile device

The problem with embedding YouTube videos is that they are an iframe and iframes need to be given an exact height and width otherwise they will look funky.

And we need to keep the proportions, based on the video aspect ratio.

To have a YouTube video be displayed responsive in your page, first wrap it into a container div:

<div class="video-container">
  <iframe src="" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>

Then add this CSS to your site:

.video-container {
    overflow: hidden;
    position: relative;

.video-container::after {
    padding-top: 56.25%;
    display: block;
    content: '';

.video-container iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;

See that magic number, 56.25%? That's needed as a padding when the aspect ratio of a video is 16:9. (9 is 56.25% of 16).

If your video is 4:3 for example, set it to 75%.

β†’ Download my free CSS Handbook!



You might be interested in those things I do:

  • Learn to code in THE VALLEY OF CODE, your your web development manual
  • Find a ton of Web Development projects to learn modern tech stacks in practice in THE VALLEY OF CODE PRO
  • I wrote 16 books for beginner software developers, DOWNLOAD THEM NOW
  • Every year I organize a hands-on cohort course coding BOOTCAMP to teach you how to build a complex, modern Web Application in practice (next edition February-March-April-May 2024)
  • Learn how to start a solopreneur business on the Internet with SOLO LAB (next edition in 2024)
  • Find me on X

Related posts that talk about css: