body {
  font-family: Arial, sans-serif;
  background-color: #f2f2f2;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
}

h2 {
  color: #333;
}

p {
  font-size: 1.1rem;
}

input[type="number"] {
  padding: 8px;
  font-size: 1rem;
  width: 60px;
  margin-right: 10px;
  border-radius: 4px;
  border: 1px solid #ccc;
}

button {
  padding: 8px 16px;
  font-size: 1rem;
  border: none;
  border-radius: 4px;
  background-color: #4caf50;
  color: white;
  cursor: pointer;
  transition: background-color 0.2s;
}

button:hover {
  background-color: #45a049;
}

#result {
  margin-top: 15px;
  font-weight: bold;
  font-size: 1.2rem;
}