@media (max-width: 767px) {
    .wpc-shop.wpc-shop .woocommerce ul.products li.product,
    .archive #left-area ul.products li.product {
        width: 45.25%!important;
        margin: 0 9.5% 9.5% 0 !important;
    }
    .wpc-shop.wpc-shop .woocommerce ul.products li.product:nth-child(2n),
    .archive #left-area ul.products li.product:nth-child(2n) {
        margin:0!important;
    }
}