body {
  font-family: sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100vh;
  margin: 0;
  background-color: #f0f0f0;
}

#number-container {
  text-align: center;
  background-color: white;
  padding: 2rem;
  border-radius: 8px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
}

#random-number {
  font-size: 3rem;
  font-weight: bold;
  margin-bottom: 1rem;
  color: #333;
}

button {
  padding: 0.5rem 1rem;
  font-size: 1rem;
  cursor: pointer;
  background-color: #007bff;
  color: white;
  border: none;
  border-radius: 4px;
}

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