body {
  font-family: Arial, sans-serif;
  text-align: center;
  margin: 20px;
}

.container {
  max-width: 400px;
  margin: 0 auto;
}

h1 {
  margin-bottom: 20px;
}

.question {
  font-size: 24px;
  margin-bottom: 10px;
}

input[type="number"] {
  width: 60px;
  font-size: 24px;
  text-align: center;
}

button {
  font-size: 16px;
  padding: 10px 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  margin-top: 10px;
}

button:hover {
  background-color: #0056b3;
}

#feedback {
  font-size: 18px;
  font-weight: bold;
  margin-top: 10px;
}

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