body{font-family:Arial,sans-serif;margin:0;color:#333}header{background:#0077b6;color:#fff;padding:20px}nav a{color:#fff;margin:0 10px;text-decoration:none}.hero{padding:80px 20px;background:#caf0f8;text-align:center}.container{max-width:1100px;margin:auto;padding:20px}.card{border:1px solid #ddd;padding:15px;margin:10px;border-radius:8px}.footer{background:#023e8a;color:#fff;padding:20px;text-align:center}