body {
  font-family: 'Courier New', monospace;
  background: #0d0d0d;
  color: #00ff99;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  margin: 0;
}

.game-container {
  text-align: center;
  max-width: 600px;
  padding: 30px;
  border: 2px solid #00ff99;
  border-radius: 15px;
  background: rgba(0, 0, 0, 0.7);
}

h1 {
  margin-bottom: 20px;
}

button {
  background: #00ff99;
  color: black;
  border: none;
  padding: 10px 20px;
  font-size: 16px;
  cursor: pointer;
  border-radius: 8px;
  margin-top: 20px;
}

button:hover {
  background: #00cc77;
}

#level-container p {
  font-size: 18px;
}

input[type="text"] {
  padding: 10px;
  width: 70%;
  margin-top: 15px;
  border: none;
  border-radius: 5px;
}