body{font-family:Arial,sans-serif;margin:0;color:#222}header{display:flex;justify-content:space-between;align-items:center;padding:20px;background:#0b3d91;color:#fff}nav a{color:#fff;margin:0 10px;text-decoration:none}.hero{padding:80px 20px;text-align:center;background:#f4f7fb}.btn{background:#0b3d91;color:#fff;padding:12px 20px;border-radius:6px;text-decoration:none}section{padding:50px 20px;max-width:900px;margin:auto}