body{margin:0;background:#050816;color:#fff;font-family:Arial;display:flex;justify-content:center}.card{margin:20px;padding:20px;max-width:360px;width:90%;text-align:center;border:1px solid #09f;border-radius:20px;box-shadow:0 0 20px #09f}.avatar{width:120px;height:120px;border-radius:50%;border:3px solid #09f}.btn{display:block;margin:10px;padding:12px;background:#09f;color:#fff;text-decoration:none;border-radius:10px}