.dt-orderable {
  position: absolute;
  

}
.dt-column-order {
  position: absolute;
  width: 12px;
  color: #ffffff20;
  line-height: 9px;
  font-size: 0.8em;
  right: 12px;
  top: 0;
  bottom: 0;
}
.table thead > tr > th {
  position: relative;
  padding-right: 30px;
}
thead > tr > th.dt-orderable span.dt-column-order::before {
  position: absolute;
  display: block;
  bottom: 50%;
  content: "▲";
  content: "▲"/"";
}
thead > tr > th.dt-orderable span.dt-column-order::after {
  position: absolute;
  display: block;
  top: 50%;
  content: "▼";
  content: "▼"/"";
}

thead > tr > th.dt-orderable span.dt-column-order.order-asc::before{
  opacity: 1;
  color: #ffffffff;
}
thead > tr > th.dt-orderable span.dt-column-order.order-desc::after{
  opacity: 1;
  color: #ffffffff;
}