body {
    font-family: Arial, sans-serif;
    margin: 0;
    background: #f4f4f4;
    color: #333;
  }
  
  header {
    background: #222;
    color: white;
    padding: 40px;
    text-align: center;
  }
  
  section {
    background: white;
    margin: 20px auto;
    padding: 20px;
    width: 80%;
    border-radius: 10px;
  }