Integration code:

  #CSS
    #iframe-el-id {
      height: 56.25vw;
      max-height: 422px;
    }

  #HTML
    <iframe
      id="iframe-el-id"
      src="null"
      allowfullscreen="true"
      webkitallowfullscreen="true"
      mozallowfullscreen="true"
      oallowfullscreen="true"
      msallowfullscreen="true"
      frameborder="0"
      allow="autoplay"
      allowautoplay="true"
      width="100%"
      height="100%"
    />