body {
    font-family: Arial, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
  }
  
  .quiz-container {
    background-color: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    width: 100%;
    max-width: 600px;
  }
  
  h1 {
    text-align: center;
    color: #333;
  }
  
  .question {
    margin-bottom: 20px;
  }
  
  .question p {
    font-weight: bold;
    margin-bottom: 10px;
  }
  
  .options label {
    display: block;
    margin-bottom: 10px;
  }
  
  button {
    display: block;
    width: 100%;
    padding: 10px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-size: 16px;
  }
  
  button:hover {
    background-color: #0056b3;
  }
  
  #results {
    margin-top: 20px;
    font-weight: bold;
    text-align: center;
  }