#booking-form {
    max-height: 0;
    overflow: hidden !important;
    transition: max-height 0.5s ease-in-out;
    padding-top: 0 !important;
    padding-bottom: 0 !important;
    margin-top: 0 !important;
    margin-bottom: 0 !important;
}

#booking-form.is-open {
    max-height: 1200px;
}