Product Block - Can I add a line between products on mobile?

Hello!

https://www.thejanimalstore.com/

My client wants to separate the products better when viewing the landing page on mobiles, as they stack on top of each other. She wants a visual break after the price line, before the next product. 

If possible, I'd love to be able to mimic the green and orange wavy lines seen at the end of each section.

You can add this to Website Tools (under Not Linked) > Custom CSS

@media screen and (max-width:767px) {
.products.collection-content-wrapper .grid-item-link.product-lists-item {
    border-bottom: 1px solid black;
    padding-bottom: 40px;
}
}