@media (max-width: 767px) {
    .contact-section {
       margin-top:-3rem;
    }
    .section-departement{
         margin-top:-5rem;
    }
    .organigramme-section{
        margin-top: 30px !important
    }
}

 .organigramme-section{
     margin-top: 3rem ;
    padding: 1rem;
 }