table.dataTable thead .sorting:before, table.dataTable thead .sorting_asc:before, table.dataTable thead .sorting_desc:before, table.dataTable thead .sorting_asc_disabled:before, table.dataTable thead .sorting_desc_disabled:before {
    right: 1em;
    content: "\2191";
}
table.dataTable thead .sorting:before, table.dataTable thead .sorting:after, table.dataTable thead .sorting_asc:before, table.dataTable thead .sorting_asc:after, table.dataTable thead .sorting_desc:before, table.dataTable thead .sorting_desc:after, table.dataTable thead .sorting_asc_disabled:before, table.dataTable thead .sorting_asc_disabled:after, table.dataTable thead .sorting_desc_disabled:before, table.dataTable thead .sorting_desc_disabled:after {
    position: absolute;
    bottom: 0.4em;
    display: block;
    opacity: 0.3;
    box-sizing: border-box;
}
table.dataTable thead .sorting:after, table.dataTable thead .sorting_asc:after, table.dataTable thead .sorting_desc:after, table.dataTable thead .sorting_asc_disabled:after, table.dataTable thead .sorting_desc_disabled:after {
    right: 0.5em;
    content: "\2193";
}

table.dataTable thead .sorting, table.dataTable thead .sorting_asc, table.dataTable thead .sorting_desc {    
    position: relative;
}

table.dataTable thead .sorting_asc:before, table.dataTable thead .sorting_desc:after {
    opacity: 1;
}