message: Fix drop region positioning on mobile
diff: &.menu-splits,
  &.menu-layout {
  margin: 0;
  + min-width: 100%;
  + min-height: 100%;
  }
  }
  #upload-drop-zone #upload-drop-zone-overlay {
  width: 100%;
  height: 100%;
  + margin: 0;
  }
  .buttons {
  