/*couleur bandeau*/
.container-header {
background: green;
}
/*taille de la police du menu*/
.navbar a,
.navbar button {
font-size: 2rem;
}
footer div.mod-footer {
  display: flex;
  flex: 1 1 0%;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
}
@media (min-width: 768px) {
  footer div.mod-footer {
    flex-direction: row;
  }
}