body {
  background-color: #0f172a;
  color: white;
  font-family: sans-serif;
  margin: 0;
  padding: 2rem;
}
.container {
  max-width: 600px;
  margin: auto;
  text-align: center;
}
button {
  background-color: #1e40af;
  border: none;
  color: white;
  padding: 1rem 2rem;
  margin: 1rem;
  font-size: 1rem;
  border-radius: 5px;
}
button:hover {
  background-color: #1d4ed8;
}
.prices {
  margin: 1rem 0 2rem;
}