.fc-col-header-cell-cushion, .fc-daygrid-day-number {
    color: #1b1e21!important;
    text-decoration: none!important;
    font-size: 20px!important;
}

.fc-col-header-cell-cushion:hover, .fc-daygrid-day-number:hover {
    color: #8bc34a!important;
}