body, html {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f4f4f4;
    color: #333;
  }
  
  nav {
    background-color: #005A9C;
    color: #fff;
    padding: 0.5em 1em;
  }
  
  .nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
  }
  
  .brand {
    font-weight: bold;
  }
  
  .install-btn {
    background-color: #ffcc00;
    border: none;
    padding: 0.5em 1em;
    cursor: pointer;
    font-weight: bold;
    border-radius: 5px;
  }
  
  .install-btn:hover {
    background-color: #e6b800;
  }
  
  main {
    padding: 1em;
  }
  
  .hero {
    text-align: center;
    padding: 2em;
    background: #e9ecef;
    margin-bottom: 1em;
    border-radius: 8px;
  }
  
  footer {
    text-align: center;
    padding: 1em 0;
    background: #ddd;
    position: fixed;
    bottom: 0;
    width: 100%;
  }