.grille_photos_accueil {
  display:grid;
  grid-template-columns: 1fr 1fr 1fr;
  grid-template-rows: 500px 500px;
  gap:15px;
  font-family:"Montez";
}

.grille_photos_accueil img{
  width:100%;
  height:100%;
  object-fit: cover;
}

@media screen and (max-width: 996px) {
  .grille_photos_accueil {
    grid-template-columns: 1fr;
    gap: 15px;
  }
}