div#registration_form_type_utilisateur{
    display: grid;
    width: 50%;
}
select#registration_form_id_type_structure_expert,select#registration_form_id_type_structure_investisseur  {
    width: 50%;
    position: relative;
}
select#registration_form_id_type_structure_expert   {
    margin-top: 30% ;
}
select#registration_form_id_type_structure_investisseur   {
     margin-top: 20% ;
}