body{margin:0;font-family:Arial;background:#111;color:#fff}
.top{background:#000;padding:18px;text-align:center;font-size:28px;font-weight:bold}
.hero img{width:100%;display:block}
.cta{text-align:center;padding:50px;background:#1b1b1b}
.btn{display:inline-block;margin-top:20px;background:#25D366;color:#fff;text-decoration:none;
padding:20px 40px;font-size:30px;border-radius:50px;animation:pulse 1.5s infinite}
footer{padding:30px;text-align:center;background:#000}
@keyframes pulse{50%{transform:scale(1.08)}}