body{font-family:Arial,sans-serif;margin:0;padding:20px;background:#f9f9f9}header{display:flex;justify-content:space-between;align-items:center;border-bottom:2px solid #0a7a5f;padding-bottom:10px;margin-bottom:20px}nav a{margin-right:15px;text-decoration:none;color:#0a7a5f;font-weight:700}.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:20px}.product-card{background:#fff;padding:15px;border-radius:8px;box-shadow:0 2px 5px #0000001a;text-align:center}