// boundaries
/*
#admin[admin_level=2][zoom>1] {
  line-color:@admin_2;
  line-width:0.5;
  [zoom=2] { line-opacity: 0.25; }
  [zoom=3] { line-opacity: 0.3; }
  [zoom=4] { line-opacity: 0.4; }
}

#barrier_points[zoom>=17][stylegroup = 'divider'] {
  marker-height: 2;
  marker-fill: #c7c7c7;
  marker-line-opacity:0;
  marker-allow-overlap:true;
}
*/