.center-language-selector {
    display: flex;
    flex-direction: column;
    align-items: center;      /* horizontal center */
    justify-content: center;  /* vertical center (if full screen) */
    min-height: 100%;        /* optional: full height */
    text-align: center;
}
#languageSelect{
    padding:7px;
    margin:6px;
    border-radius:5px;
}