td.details-control {
    width: 20px;
    background: url('DataTables/images/details_open.png') no-repeat center center;
    cursor: pointer;
}

tr.shown td.details-control {
    background: url('DataTables/images/details_close.png') no-repeat center center;
}

tfoot input {
    width: 100%;
    padding: 3px;
    box-sizing: border-box;
}