section.related.products{
    clear:both;
}
section.related.products h2{
    font-size: 18px;
    margin-bottom: 20px;
}

.woocommerce ul.products li.product.last {
    margin-right: 2.3% !important;
}

.woocommerce ul.products li.product:nth-child(4n) {
    margin-right: 0 !important;
}