Apply the following styles, and it will become a practical tool:

  ._wrapper_5didy_26 {
    padding: 0;
    height: 100%;
  }

  ._window_5didy_31 {
    max-width: none;
  }

  ._experimental-notice_5didy_9,
  ._toolbar_5didy_64 {
    display: none;
  }