body {
  background-color: #0d0d0d;
  color: #f0f0f0;
  font-family: 'Poppins', sans-serif;
  margin: 0;
  padding: 0;
}
header {
  text-align: center;
  padding: 20px;
  background: linear-gradient(90deg, #e08814, #ebb504);
}
.class-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  padding: 40px;
}
.class-card {
  background-color: #1a1a1a;
  border-radius: 10px;
  text-align: center;
  padding: 20px;
  color: #fff;
  text-decoration: none;
  transition: transform 0.3s, box-shadow 0.3s;
}
.class-card:hover {
  transform: scale(1.05);
  box-shadow: 0 0 15px rgba(255, 255, 255, 0.3);
}
.class-card img {
  width: 64px;
  height: 64px;
  margin-bottom: 10px;
}