message: Fix Alert for single button on iOS
diff: border-radius: 0 0 13px 0;
  margin: 0;
  }
  + .Alert--ios.Alert--h .Alert__btn:first-child:last-child {
  + border-radius: 0 0 13px 13px;
  + }
  .Alert--ios.Alert--v .Alert__btn {
  margin: 0 0 1px;
  