.x-select--custom__popper{
  .x-select-more-options{
    .x-tree{
      max-height:312px;
      min-height: 106px;
      overflow-y: scroll;
      overflow-y: overlay;
    }
  }
  .x-select-more-options.has-max{
    .x-tree{
      max-width: 360px;
    }
  }
  .x-select-more-options.fixed-height{
    height: 360px;
  }
}