CodePen Embed - Using CSS to Responsively Embed Vimeo on Wordpress

.embed-vimeo iframe {
  max-width: 100%;
}

@media screen and (max-width: 600px) {
  .embed-vimeo iframe {
    max-height: 200px;
  }
}

This Pen is owned by Scott Dawson on CodePen.

This Pen doesn't use any external CSS resources.

This Pen doesn't use any external JavaScript resources.