* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }
  
  body {
    font-family: 'Segoe UI', sans-serif;
    background-color: #f4f4f4;
    color: #333;
  }
  
  header {
    background-color: #222;
    color: white;
    padding: 30px 20px;
    text-align: center;
  }
  
  nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    background-color: #444;
  }
  
  nav ul li {
    margin: 0 20px;
  }
  
  nav ul li a {
    color: white;
    text-decoration: none;
    padding: 15px;
    display: inline-block;
    transition: background 0.3s;
  }
  
  nav ul li a:hover {
    background-color: #666;
    border-radius: 5px;
  }
  
  main {
    padding: 40px 20px;
    text-align: center;
  }
  
  main img {
    max-width: 80%;
    height: auto;
    margin-top: 20px;
    border-radius: 10px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
  }
  
  
  footer {
    background-color: #222;
    color: white;
    text-align: center;
    padding: 15px;
    position: fixed;
    bottom: 0;
    width: 100%;
    font-size: 14px;
  }