body {
    font-family: Arial, sans-serif;
    margin: 40px;
    background-color: #f9f9f9;
    color: #333;
  }
  
  h1, h2 {
    color: #3B6F58;
  }
  
  ul {
    line-height: 1.8;
    padding-left: 20px;
  }
  
  a {
    color: #4a896c;
    text-decoration: none;
  }
  
  a:hover {
    text-decoration: underline;
  }
  
  .reference-section {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 0 8px rgba(0,0,0,0.1);
    max-width: 900px;
    margin: auto;
  }