body {
    background-color: #f5f5f5;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: 0;
    color: #333;
    min-height: 100vh; /* Hauteur minimale de 100% de la hauteur de la fenêtre */
    display: flex;
    flex-direction: column;
  }
  .header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 50px;
    background-color: white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  
  .logo img {
    height: 50px;
    padding-top: 20px;
  }
  
  .search-container {
    display: flex;
    align-items: center;
  }
  
  .search-box {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    margin-right: 10px;
    font-size: 14px;
  }
  
  .search-icon {
    font-size: 20px;
    color: #333;
    cursor: pointer;
  }
  
  .main-nav {
    display: flex;
    justify-content: right;
    background-color: white;
    padding: 5px 0;
    margin-bottom: -25px;
  }
  
  .main-nav ul {
    display: flex;
    list-style: none;
  }
  
  .main-nav ul li {
    margin: 0 15px;
  }
  
  .main-nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    padding: 5px 0;
    transition: color 0.3s;
    display: flex;
    align-items: center;
  }
  
  .home-icon {
    margin-right: 0.1px;
    font-size: 14px;
    position: relative;
    top: -1px;
    display: inline-flex;
    align-items: center;
  }
  
  .main-nav ul li a:hover {
    color: #0066cc;
  }
  
  .main-nav ul li:first-child a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding-top: 3px;
  }
  
  /* Media query pour les appareils mobiles */
  @media (max-width: 768px) {
    .header {
      padding: 15px 20px;
      flex-direction: column;
    }
  
    .main-nav ul {
      flex-wrap: wrap;
      justify-content: center;
    }
  }
  
  .hero-contain {
    font-size: 16px;
    color: #f5f5f5;
    background-image: url("../images/BatimentIRR.png");
    background-repeat: no-repeat;
    background-size: cover;
    background-position: center;
    margin-top: 15px;
  }
  .hero-title {
    font-size: 32px;
    font-weight: bold;
    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.5);
    padding: 50px;
    height: 5px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    margin-bottom: 15px;
  }
  .link-white a:link {
    color: white;
  }
  
  .link-white a:visited {
    color: white;
  }
  
  .link-white a:hover {
    color: white; /* ou une couleur légèrement différente comme #e0e0e0 pour l'effet hover */
  }
  .description {
    margin-left: 50px;
    margin-right: 40px;
    text-align: justify;
  }
  
  .footer {
    text-align: center;
    font-size: 0.9em;
    line-height: 0.5em;
    color: #817979;
    width: 100%;
  }