thead th{
  position: relative;
  height: 30px;
}
thead th:after{
  content: '';
  display: inline-flex;
  height: 34px;
  width: 24px;
  position: relative;
  vertical-align: middle;
}
.link{
  cursor: pointer;
  /*color:#369;*/
  color:blue;
}
.link:hover{
  color:red;
}
.caret-wrapper {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  height: 34px;
  width: 24px;
  vertical-align: middle;
  cursor: pointer;
  overflow: initial;
  position: relative;
  
}
.sort-caret {
  width: 0;
  height: 0;
  /*border: 5px solid transparent;*/
  border: 9px solid transparent;
  position: absolute;
  left: 7px;
}
.sort-caret.ascending {
  /*border-bottom-color: #c0c4cc;*/
  border-bottom-color: gray;
  /*top: 5px;*/
  top: -3px;
}
.sort-caret.descending {
  /*border-top-color: #c0c4cc;*/
  border-top-color: gray;
  /*bottom: 7px;*/
  bottom: -1px;
}
.is-sort-asc .sort-caret.ascending {
  /*border-bottom-color: #409eff;*/
  border-bottom-color: red;
}
.is-sort-desc .sort-caret.descending {
  /*border-top-color: #409eff;*/
  border-top-color: red;
}