.sorting:after {
    font-family: Splunk Icons;
    content: "\2195";
    padding-left: 5px;
    color: #bbb;
}

.sorting_asc:after {
    font-family: Splunk Icons;
    content: "\21A5";
    padding-left: 5px;
    color: black;
}

.sorting_desc:after {
    font-family: Splunk Icons;
    content: "\21A7";
    padding-left: 5px;
    color: black;
}