body {
  font-family: Arial, sans-serif;
  padding: 2rem;
  background-color: #f4f4f4;
}

#quiz-container {
  background: white;
  padding: 2rem;
  max-width: 600px;
  margin: auto;
  border-radius: 12px;
  box-shadow: 0 0 10px rgba(0,0,0,0.1);
}

button {
  display: block;
  margin: 0.5rem 0;
  padding: 0.5rem;
  width: 100%;
  border: none;
  background-color: #007bff;
  color: white;
  border-radius: 8px;
  cursor: pointer;
}
select {
  width: 100%;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  border-radius: 8px;
  border: 1px solid #ccc;
}