* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
  }
  
  body {
    background-color: #f4f4f4;
    color: #333;
  }
  
  nav {
    background-color: #333;
    padding: 1rem;
    position: fixed;
    width: 100%;
    top: 0;
  }
  
  nav ul {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
  }
  
  nav a {
    color: white;
    text-decoration: none;
    font-weight: bold;
  }
  
  nav a:hover {
    color: #ddd;
  }
  
  .container {
    max-width: 1200px;
    margin: 5rem auto;
    padding: 2rem;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
  }
  
  h1 {
    text-align: center;
    margin-bottom: 1rem;
  }
  
  button {
    background-color: #333;
    color: white;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
  }
  
  img, video {
    max-width: 100%;
    border-radius: 8px;
    margin: 1rem 0;
  }