body {
  font-family: 'Arial', sans-serif;
}

nav {
  position: sticky;
  top: 0;
  z-index: 100;
}

button, a[href*="#"] {
  transition: background-color 0.3s ease, transform 0.2s ease;
}

button:hover, a[href*="#"]:hover {
  transform: scale(1.05);
}

@media (max-width: 768px) {
  nav ul {
    flex-direction: column;
    align-items: center;
  }
  nav ul li {
    margin: 0.5rem 0;
  }
  .grid-cols-3 {
    grid-template-columns: 1fr;
  }
}