#customer-form > div{
    display: flex;
    flex-direction: column;
}
#customer-form .form-id_gender{
    order: -8;
}
#customer-form .form-lastname{
    order: -7;
}
#customer-form .form-firstname{
    order: -6;
}
#customer-form .form-lpsproaccount_company{
    order: -5;
}
#customer-form .form-lpsproaccount_siret{
    order: -4;
}
#customer-form .form-cai_field_1{
    order: -3;
}
#customer-form .form-email{
    order: -2;
}
#customer-form .form-cai_field_2{
    order: -1;
}