.ui-sort-table thead th:not([unsortable]) {
  cursor: pointer;
  position: relative;
}
.ui-sort-table thead th:not([unsortable]):hover {
  color: #428bca;
}
.ui-sort-table thead th:not([unsortable]) i {
  margin-left: 5px;
}
.ui-sort-table thead th:not([unsortable]) .fa-angle-down {
  visibility: hidden;
}
.ui-sort-table thead th:not([unsortable]) .fa-angle-down.fa-visible {
  visibility: visible;
}