body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin-top: 50px;
}

#game {
  display: inline-block;
  padding: 20px;
  border: 1px solid #ccc;
  border-radius: 10px;
}

input {
  padding: 8px;
  width: 150px;
  font-size: 16px;
}

button {
  padding: 8px 15px;
  margin-left: 10px;
  font-size: 16px;
  cursor: pointer;
}

#message {
  margin-top: 20px;
  font-size: 18px;
  font-weight: bold;
}