.header,
.header:has(+ main .product-page),
.header:has(+ main .cart-page) {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 40;
  background: rgba(6, 31, 32, 0.92);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
}

.product-page,
.cart-page {
  padding-top: 130px;
}