.table-responsive img {
    max-width: 90px;
    max-height: 100%;
    height: auto;
    width: auto;
    vertical-align: middle;
}

.table>tbody>tr>td {
    vertical-align: middle;
}

@media (max-width:500px) {
    .table-responsive img {
        max-width: 100%;
    }
}