body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen,
      Ubuntu, Cantarell, "Open Sans", "Helvetica Neue", sans-serif;
    max-width: 720px;
    margin: 2rem auto;
    padding: 0 1rem;
    line-height: 1.6;
    color: #222;
    background-color: #fefefe;
  }
  
  h1 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: #003366;
    border-bottom: 2px solid #003366;
    padding-bottom: 0.3rem;
  }
  
  h2 {
    font-size: 1.25rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
    color: #004080;
  }
  
  p, ul {
    font-size: 1rem;
    margin-bottom: 1rem;
  }
  
  ul {
    padding-left: 1.2rem;
  }
  
  a {
    color: #0066cc;
    text-decoration: none;
  }
  
  a:hover,
  a:focus {
    text-decoration: underline;
  }
  
  strong {
    font-weight: 600;
  }