body {
  font-family: Arial, sans-serif;
  margin: 20px;
  background-color: #f4f4f9;
}

.container {
  max-width: 600px;
  padding: 10px;
}

.message {
  font-size: 1.2em;
  margin-bottom: 15px;
  padding: 10px;
  border: 2px solid #007BFF;
  border-radius: 5px;
  background-color: #ffffff;
}

.button-container {
  display: flex;
  gap: 10px;
}

.nav-button {
  padding: 10px 20px;
  font-size: 1em;
  color: #fff;
  background-color: #007BFF;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s;
}

.nav-button:disabled {
  background-color: #cccccc;
  cursor: not-allowed;
}

.nav-button:hover:not(:disabled) {
  background-color: #0056b3;
}