hztianxu-draft-js-plugins/draft-js-video-plugin/src/video/components/DefaultVideoComponent.css

A Plugin Architecture on top of Draft.JS

.iframeContainer {
  width: 100%;
  height: 0;
  position: relative;
  padding-bottom: 56.25%;
}

.invalidVideoSrc {
  text-align: center;
  background-color: #eaeaea;
  padding: 1em;
}