body {
  font-family: Arial, sans-serif;
  background: #f4f4f4;
  margin: 0;
}

main {
  padding-top: 120px; /* Adjust this if header heights change */
}

.navbar-nav .nav-link {
  font-weight: bold;
  font-size: 18px;
  margin-left: 15px;
}

.about-section {
  background-color: #f4f4f4;
  padding: 60px 0;
}

.sidebar {
  background-color: #fff;
  padding: 20px;
  border-radius: 10px;
  box-shadow: 0 0 10px rgba(0,0,0,0.05);
  margin-bottom: 20px;
}

.sidebar a {
  display: block;
  margin-bottom: 10px;
  color: #333;
  text-decoration: none;
  font-weight: bold;
}

.sidebar a:hover,
.sidebar a.active {
  color: #007bff;
}

.section-content {
  display: none;
}

.section-content.active {
  display: block;
  animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
  from {opacity: 0; transform: translateY(10px);}
  to {opacity: 1; transform: translateY(0);}
}

.section-box {
  background: #fff;
  padding: 25px;
  border-radius: 10px;
  box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.section-box img {
  max-width: 100%;
  border-radius: 8px;
  margin-bottom: 20px;
}

@media (max-width: 768px) {
  .sidebar {
    position: static;
    top: auto;
  }
}

.section {
  background-color: white;
  border: 1px solid #ccc;
  border-radius: 10px;
  padding: 20px;
  text-align: center;
  width: 30%;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

.section img {
  width: 419px;
  height: 372px;
  border-radius: 10px;
}

.section h2 {
  font-size: 24px;
  margin-top: 15px;
  color: #333;
}