dataviz/courses/libs/dt-core-1.10.19/css/jquery.dataTables.extra.css

/* Selected rows/cells */
table.dataTable tr.selected td, table.dataTable td.selected {
  background-color: #b0bed9 !important;
}
/* In case of scrollX/Y or FixedHeader */
.dataTables_scrollBody .dataTables_sizing {
  visibility: hidden;
}