message: Supported margins for Separator in Group__inner
diff: padding-right: 8px;
  }
  +.Group__inner--sizeX-regular > .Separator {
  + margin-top: 8px;
  + margin-bottom: 8px;
  +}
  +
  .Group:last-of-type .Group__inner--sizeX-regular + .Group__separator {
  display: block;
  }
  