.booking-validation-message.error {
    color: #cd5c5c;
    margin-bottom: 20px;
}

.booking-validation-message.error > a {
    text-decoration: underline;
}

select[data-placeholder="Number of adults"].tcenabled.error {
    border-color: #cd5c5c;
}

body .wc-bookings-date-picker .ui-datepicker td.cell-adult-count-error a {
    background-color: #ED2939 !important;
    opacity: 1;
}

body .wc-bookings-date-picker .ui-datepicker td.cell-adult-count-error a.ui-state-active {
    background-color: #8b0000 !important;
}