AdminLTE/plugins/datatables-fixedcolumns/css/fixedColumns.bootstrap4.css

tr.even td {
  background-color: #ffffff;
}

tr.odd td {
  background-color: #f9f9f9;
}

tr.selected td {
  background-color: #0088cc;
}

thead th {
  background-color: white;
}

tfoot th {
  background-color: white;
}

th.dtfc-fixed-left,
th.dtfc-fixed-right,
td.dtfc-fixed-left,
td.dtfc-fixed-right {
  z-index: 1;
}

div.dtfc-right-top-blocker,
div.dtfc-left-top-blocker {
  margin-top: 6px;
  border-bottom: 0px solid #ddd !important;
}

table.dataTable.table-bordered.dtfc-has-left {
  border-left: none;
}

div.dataTables_scroll.dtfc-has-left table.table-bordered {
  border-left: none;
}

div.dataTables_scrollBody {
  border-left: 1px solid #ddd !important;
}

div.dataTables_scrollFootInner table.table-bordered tr th:first-child,
div.dataTables_scrollHeadInner table.table-bordered tr th:first-child {
  border-left: 1px solid #ddd !important;
}

tr.dt-rowReorder-moving td.dtfc-fixed-left,
tr.dt-rowReorder-moving td.dtfc-fixed-right {
  border-top: 2px solid #888 !important;
  border-bottom: 2px solid #888 !important;
}
tr.dt-rowReorder-moving td.dtfc-fixed-left:first-child {
  border-left: 2px solid #888 !important;
}
tr.dt-rowReorder-moving td.dtfc-fixed-right:last-child {
  border-right: 2px solid #888 !important;
}