.table-center {
    width: 60%;
    margin-left: auto;
    margin-right: auto;
}

.table-borderless>tbody>tr>td,
.table-borderless>tbody>tr>th,
.table-borderless>tfoot>tr>td,
.table-borderless>tfoot>tr>th,
.table-borderless>thead>tr>td,
.table-borderless>thead>tr>th {
    border: none;
}

a.dropdown-item.disabled {
    pointer-events:none;
    opacity:0.4;
}