:root{
    --nb-product-detail-purchase-2-add-to-cart-btn-height:  44px;
}
.nb-product-detail-purchase-2 > *:not(:first-child){
    margin-top: 20px;
}
.nb-product-detail-purchase-2 .nb-add-to-cart{
    display: flex;
    align-items: center;
    gap: 5px;
    width: 100%;
    height: var(--nb-product-detail-purchase-2-add-to-cart-btn-height);
}