@media (min-width: 782px) {
    body.tax-product_cat .wp-block-columns .wp-block-column.col-sidebar {
        flex-basis: unset;
        flex-grow: unset;
        flex: 0 0 390px;
    }
    body.tax-product_cat .wp-block-column.col-main-content ul {
        margin-bottom: 20px;
        display: flex;
        flex-wrap: wrap;
    }
     body.tax-product_cat .wp-block-column.col-main-content ul article.book-item img {
        width: 200px;
    }
}

@media (max-width: 781px) {
    body.tax-product_cat .wp-block-column.col-main-content ul article.book-item div.thumb {
        height: auto !important;
    }
}