a.asc:after, a.desc:after {
    padding:0 5px;
    display: inline-block;
    line-height: 1;
    font-weight: 900;
    font-family: 'Font Awesome 5 Free';
}

a.asc:after {
    content: "\f15d";
}

a.desc:after {
    content: "\f15e";
}

.sort-numerical a.asc:after {
    content: "\f162";
}

.sort-numerical a.desc:after {
    content: "\f163";
}

.sort-ordinal a.asc:after {
    content: "\f160";
}

.sort-ordinal a.desc:after {
    content: "\f161";
}