How to remove white space above shop categories

Site URL: https://www.mmmearsart.com/

How do I remove this spacing circled in blue? I was able to remove some spacing by removing the bottom padding from the section above it by using CSS, but I can't seem to do the same for the section below it for the top margin.

Add to Design > Custom CSS

section.products.collection-content-wrapper.products-list {
    padding-top: 0px;
}