body {
    background-color: lightgrey;
}

.table {
    background-color: white;
}

table.dataTable thead .sorting:after,
table.dataTable thead .sorting:before,
table.dataTable thead .sorting_asc:after,
table.dataTable thead .sorting_asc:before,
table.dataTable thead .sorting_asc_disabled:after,
table.dataTable thead .sorting_asc_disabled:before,
table.dataTable thead .sorting_desc:after,
table.dataTable thead .sorting_desc:before,
table.dataTable thead .sorting_desc_disabled:after,
table.dataTable thead .sorting_desc_disabled:before {
    bottom: .5em;
}