body{font-family:Arial,sans-serif;margin:0;color:#222} .hero{background:#0b5c5c;color:#fff;text-align:center;padding:40px} .hero img{max-width:900px;width:100%;border-radius:10px} .btn{background:#f59e0b;color:#fff;padding:12px 20px;border-radius:6px;text-decoration:none} section{padding:40px 20px;max-width:1000px;margin:auto} .grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:18px} footer{text-align:center;padding:24px;background:#eee}