body{font-family:Arial;margin:0;background:#f5f5f5}.hero{background:#0a63d8;color:#fff;padding:60px 20px;text-align:center}.btn{background:#25D366;color:#fff;padding:12px 18px;border-radius:8px;text-decoration:none}section{background:#fff;max-width:900px;margin:20px auto;padding:20px;border-radius:10px}footer{text-align:center;padding:20px;color:#555}