body { margin: 0; }

  @media only screen and (min-width: 768px) {
    .pva-modal-content {
      max-width: 640px;
      max-height: calc(100vh - 20px) !important;
    }
  }

  .pva-modal-box {
    padding: 0;
    margin: 0;
    width: 100%;
    height: 100%;

    display: block;
    margin-left: auto;
    margin-right: auto;
  }

  #pva-vmlive-iframe {
    width: 100%;
    height: 100%;
  }