body {
  font-family: Arial, sans-serif;
  background-color: #f4f4f9;
  color: #333;
}

.header {
  background-color: #007bff;
  color: white;
  padding: 30px;
  position: relative;
}

.header-content {
  display: flex;
  justify-content: center;
  text-align: center;
  width: 100%;
}

.header h1 {
  margin-bottom: 0;
  font-size: 2.5em;
}

.header p {
  font-size: 1.7em;
}

.logo-left {
  max-height: 80px;
  width: auto;
  position: absolute;
  left: 30px;
  top: 50%;
  transform: translateY(-50%);
  object-fit: contain;
}

@media (max-width: 767px) {
  .header-content {
    flex-direction: column;
    text-align: center;
  }

  .logo-left {
    position: static;
    max-height: 60px;
    width: auto;
    margin-bottom: 20px;
  }
}

@media (min-width: 768px) {
  .header-content {
    flex-direction: column;
  }

  .logo-left {
    position: absolute;
    left: 30px;
    top: 50%;
    transform: translateY(-50%);
  }
}

.card-title {
  font-size: 1.5em;
  color: #007bff;
}

.lab-section h2.card-title,
.congres-title,
.site-institutionnel-title,
.archive-section h2.card-title {
  font-family: "Georgia", serif;
  color: #c0392b;
  font-size: 2em;
}

.congres-description {
  font-size: 1.2em;
}

.btn-primary {
  background-color: #007bff;
  border-color: #007bff;
}

.btn-primary:hover {
  background-color: #0056b3;
  border-color: #004085;
}

.footer {
  background-color: #007bff;
  color: white;
  padding: 20px;
  text-align: center;
  margin-top: 50px;
}

.container {
  margin-top: 30px;
}

.lab-link {
  font-size: 1.1em;
  color: #007bff;
  text-decoration: none;
}

.lab-link:hover {
  text-decoration: underline;
}

.archive-section ul {
  list-style-type: none;
  padding: 0;
}

.archive-section li {
  font-size: 1.2em;
  margin-bottom: 10px;
}

.logo-icon {
  width: 50px;
  height: 50px;
  object-fit: contain;
  margin-right: 10px;
}

.lab-item {
  display: flex;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid #ccc;
}