.acIdent {
    display: flex;
    flex-direction: row;
    justify-content: center;
    gap: 20px;
}

#part-oubli, #part-envoi{
    display: none;
}
#bt_login, #bt_creation, #bt_oubli, #lienoubli {
    margin: 5px 0.75rem;
}

@media only screen and (max-width: 990px) {
    .acIdent {
        flex-direction: column;
    }
}