table[data-sortable] th:after {
  background-image: var(--sort-both);
  content: "";
  padding-left: 21px;
  background-repeat: no-repeat;
  background-position: center;
}

table[data-sortable] th[data-sorted-direction="ascending"]:after {
  background-image: var(--sort-down);
}

table[data-sortable] th[data-sorted-direction="descending"]:after {
  background-image: var(--sort-up);
}