body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  header {
    background-color: #002347;
    color: #fff;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
  }
  
  nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  nav li {
    margin-left: 20px;
  }
  
  nav li:first-child {
    margin-left: 0;
  }
  
  nav a {
    color: #fff;
    text-decoration: none;
  }
  
  main {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
  }
  
  section {
    margin-bottom: 40px;
  }
  
  h2 {
    font-size: 32px;
    margin-bottom: 20px;
  }
  
  p {
    font-size: 18px;
    line-height: 1.5;
  }
  
  footer {
    background-color: #002347;
    color: #fff;
    text-align: center;
    padding: 20px;
  }