/* sticky rows on top */
[bt-sticky]{
  z-index:9;
  position: sticky;
  position: -webkit-sticky; /* Safari */
}

/* sticky rows over cols, looks nicer */
.fl-col[bt-sticky]{
  z-index: 8;
}

/* nested col under parent col */
.fl-col-group-nested .fl-col[bt-sticky]{
  z-index: 7;
}