.geburtstag select{
background-color: white !important;
    height: 40px !important;
    border: #000 1px solid !important;
    padding: 0 8px !important;
    font-weight: normal !important;
    font-size: 1rem !important;
    letter-spacing: 1px !important;
    color: #000000 !important;
    margin: 0 !important;
}