.timetable.table-dark.table-bordered,
.timetable.table-dark.table-bordered > thead > tr > th,
.timetable.table-dark.table-bordered > tbody > tr > td {
    border: 1px solid #666 !important;
}
.timetable.table-dark {
    background-color: #111;
}
.timetable.table-dark > thead > tr > th {
    background-color: #333;
    color: #fff;
}