@media (min-width: 992px){
    table.dataTable > tbody > tr > td.dtr-control:before {
        content: "+" !important;
        background-color: #059DC6 !important;
        color: #ffffff !important;
        font-weight: 700 !important;
        border: none !important;
        border-radius: 100%;
        width: 18px !important;
        height: 18px !important;
        display: inline-flex !important;
        align-items: center !important;
        justify-content: center !important;
        margin-right: .5em !important;
        box-sizing: border-box !important;
        text-decoration: none !important;
    }

    table.dataTable > tbody > tr.dtr-expanded > td.dtr-control:before {
        content: "-" !important;
        background-color: #d9534f !important;
        color: #fff !important;
    }

}