Responsive iframe with fixed height

Question

I'm trying to make an iframe with responsive width (filling a div) but fixed height (overflow hidden by div). But when I scale the page the video also scales down. I want the iframe to keep 100% height.

Does anyone know what I'm doing wrong here? I've tried not setting the iframes height, og setting it to auto, but it doesn't work.

HTML:

<div class="container">
<div class="video-wrapper">
<iframe class="video" src="https://player.vimeo.com/video/82481183?background=1" frameborder="0" allow="autoplay" ></iframe>
</div>
</div>

CSS:

.container {
background-color: green;
max-width: 1200px;
min-width: 700px;
height: 700px;
}

.video-wrapper {
background-color: red;
width: 100%;
height: 100%;
overflow: hidden;
}

.video {
height: 100%;
width: 100%;
}

https://codepen.io/marteteigen/pen/NWwdGXd

Any help is much appreciated!

Answer 1

I tried multiple ways to use CSS for this embeded player but it looks like it has to be JS with a resize listener and absolute positionning that does the job

Codepen here to load the video: https://codepen.io/savageGoat/pen/oNoBbMz

Full code:

const vid = document.querySelector('.video');
const container = document.querySelector('.video-wrapper');
const vidWidth = vid.offsetWidth;
const vidHeight = vid.offsetHeight;
const applyWidthHeight = () => {
  const vidRatio = vidHeight / vidWidth;
  const parentHeight = container.offsetHeight;
  vid.height = parseInt(parentHeight) + 'px';
  vid.width = parseInt(parentHeight*vidRatio) + 'px';
  vid.style.height = parseInt(parentHeight) + 'px';
  vid.style.width = parseInt(parentHeight*vidRatio) + 'px';
}

window.addEventListener('resize', applyWidthHeight);
document.addEventListener('DOMContentLoaded', applyWidthHeight);

.container {
  background-color: green;
  max-width: 1200px;
  min-width: 700px;
  height: 700px;
}

.video-wrapper {
  background-color: red;
  width: 100%;
  height: 100%;
  overflow: hidden;
  position: relative;
}

.video {
  height: 100%;
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
}

<div class="container">
  <div class="video-wrapper">
    <iframe class="video" src="https://player.vimeo.com/video/82481183?background=1" frameborder="0" allow="autoplay" ></iframe>
  </div>
</div>