body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 0;
  padding: 0;
}

h1 {
  margin-top: 20px;
}

.mode-switch {
  margin-top: 20px;
}

.game-container {
  margin-top: 50px;
}

#display {
  font-size: 36px;
  margin-bottom: 20px;
}

#guess {
  padding: 5px;
  font-size: 16px;
}

#submit {
  margin-top: 10px;
  padding: 5px 10px;
  font-size: 16px;
}

#reset {
  margin-top: 10px;
  padding: 5px 10px;
  font-size: 16px;
}

#score {
  margin-top: 20px;
  font-size: 18px;
}