body {
  background: #0d0d0d;
  color: #ffaa00;
  font-family: "Courier New", monospace;
  text-align: center;
}
h1 { color: #ffcc00; }
.card {
  background: #1a1a1a;
  padding: 20px;
  margin: 20px;
  border: 1px solid #ffaa00;
  border-radius: 10px;
}
button {
  background: #ffaa00;
  color: black;
  border: none;
  padding: 10px 20px;
  cursor: pointer;
}
button:hover { background: #ffcc00; }