body {
  font-family: Arial, sans-serif;
  background: #111;
  color: #fff;
  text-align: center;
  margin: 0;
  padding: 2rem;
}

.cards {
  display: flex;
  justify-content: center;
  margin-top: 2rem;
}

.card {
  background: #222;
  color: #00ff99;
  padding: 1rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  transition: background 0.3s;
}

.card:hover {
  background: #00ff99;
  color: #111;
}