@media (max-width: 600px) {

    /* NAVIGATION */
    nav {
      padding: 20px;
    }
  
    nav ul {
      flex-direction: column;
      align-items: center;
      font-size: 18px;
    }
  
    nav ul li {
      margin: 10px 0;
    }
  
    /* SECTIONS PRINCIPALES */
    section {
      padding: 30px;
      margin: 30px auto;
    }
  
    h1, h2 {
      font-size: 26px;
      text-align: center;
    }
  
    p {
      font-size: 15px;
    }
  
    /* GRILLES (boxeurs, autres grilles) */
    .boxeurs-grille,
    .grille,
    .cards {
      grid-template-columns: 1fr;
    }
  
    /* IMAGES */
    img {
      max-width: 100%;
      height: auto;
    }
  
    .boxeur img {
      width: 180px;
      height: 240px;
    }
  }

  @media (min-width: 601px) and (max-width: 1024px) {

    /* NAVIGATION */
    nav ul {
      font-size: 18px;
    }
  
    /* SECTIONS */
    section {
      padding: 40px;
      width: 95%;
    }
  
    h1, h2 {
      font-size: 30px;
    }
  
    /* GRILLES */
    .boxeurs-grille,
    .grille,
    .cards {
      grid-template-columns: repeat(2, 1fr);
    }
  
    /* IMAGES BOXEURS */
    .boxeur img {
      width: 200px;
      height: 270px;
    }
  }