body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
  }
  
  header {
    background-color: lightgray;
    padding: 20px;
    text-align: center;
  }
  
  header h1 {
    margin: 0;
  }
  
  nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    margin: 0;
    padding: 0;
  }
  
  nav a {
    color: black;
    display: block;
    padding: 10px 20px;
    text-decoration: none;
  }
  
  main {
    padding: 20px;
  }
  
  #about-info {
    text-align: center;
  }
  
  footer {
    background-color: lightgray;
    padding: 20px;
    text-align: center;
  }