body{margin:0;font-family:Tahoma;background:#f9f9f9} .container{max-width:1200px;margin:auto;padding:20px} .main-header{background:#fff;padding:15px;box-shadow:0 2px 5px #ddd}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:20px} .product-card{background:#fff;padding:15px;border-radius:10px}
.btn{background:#e74c3c;color:#fff;padding:10px 20px;border-radius:5px;text-decoration:none;display:inline-block}