*{ margin: 0; padding: 0}

.iframe-container {
  position: relative;
  height: 100%;
  min-height: 100vh;
  iframe {
    height: 100%;
    width: 100%;    
    left: 0;
    top: 0;
    position: absolute;
    body,html {
      height: 100%;
      overflow: hidden;
      background: transparent;
    }
  }
}