body{font-family:Arial,sans-serif;margin:0;color:#222}header{display:flex;justify-content:space-between;padding:20px;background:#fff;position:sticky;top:0}nav a{margin-left:15px}.hero{padding:80px 20px;background:#2563eb;color:#fff;text-align:center}.btn{background:#f97316;color:#fff;padding:12px 20px;text-decoration:none;border-radius:6px}section{padding:50px 20px;max-width:900px;margin:auto}footer{background:#111;color:#fff;padding:30px;text-align:center}