body {
    font-family: Arial, sans-serif;
    max-width: 600px;
    margin: auto;
    padding-bottom: 2rem;
  }
  
  h1 {
    text-align: center;
    margin-top: 2rem;
  }
  
  h2 {
    text-align: center;
    margin-top: 2rem;
  }
  
  #upload-form {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  
  input[type="file"],
  input[type="text"],
  input[type="password"],
  button {
    margin-bottom: 1rem;
    cursor: pointer;
  }
  
  #pdf-list li {
    list-style: none;
    margin-bottom: 0.5rem;
    text-align: left;
  }
  
  #pdf-list a {
    text-decoration: none;
    color: blue;
  }
  
  #pdf-list a:hover {
    text-decoration: underline;
  }