.container {
  margin: 0 auto;
  width: 95%;
}
.conteneur, .conteneur1, .conteneur2, .conteneur3 {
  margin: 0 auto;
  width: 75%;
}
nav, footer {
  background-color: #333;
  color: #fff;
  text-align: center;
}
nav {
  display: flex;
  flex-direction: column;
}
nav > a {
  flex: 1;
  text-align: center;
  text-decoration: none;
  color: #fff;
}
@media only screen and (min-width: 768px) {
  nav { flex-direction: row; }
  .projet-container { display: flex; }
  .projet-container .projet-list { width: 25%; }
  .projet-container .projet { flex: 1; }
  .film-conteneur { display: flex; }
  .film-conteneur .film-list { width: 25%; }
  .film-conteneur .film { flex: 1; }
  .roman-conteneur1 { display: flex; }
  .roman-conteneur1 .roman-list { width: 25%; }
  .roman-conteneur1 .roman { flex: 1; }
  .nouvelle-conteneur2 { display: flex; }
  .nouvelle-conteneur2 .nouvelle-list { width: 25%; }
  .nouvelle-conteneur2 .nouvelle { flex: 1; }
  .press-conteneur3 { display: flex; }
  .press-conteneur3 .press-list { width: 35%; }
  .press-conteneur3 .press { flex: 1; }
}
.responsive {
  max-width: 100%;
  height: auto;
}
a {
  text-decoration: none;
}
a:hover {
  text-decoration: underline;
}