body{font-family:Arial,sans-serif;margin:0;padding:0;background-color:#f5f5f5}.container{max-width:1200px;margin:0 auto;padding:20px}.card{background-color:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a;padding:20px;margin-bottom:20px}.btn{display:inline-block;padding:8px 16px;background-color:#4caf50;color:#fff;border:none;border-radius:4px;cursor:pointer;text-decoration:none;font-size:14px}.btn:hover{background-color:#45a049}