body {
    font-family: Arial, sans-serif;
    max-width: 500px;
    margin: auto;
    padding-top: 20px;
  }
  
  h2 {
    text-align: center;
  }
  
  form {
    margin-bottom: 20px;
  }
  
  p {
    font-weight: bold;
    text-align: center;
  }
  
  .hidden {
    display: none;
  }