can I add a horizontal line between rows on collection page?

Site URL: https://gregmaroney.com/singles

I'd like to have a horizontal line between rows because the buy button is below each product but much closer to the row below and mistakes have been made in ordering.

I had a blank page and added each product, but then the next/previous option was removed, and if I used breadcrumbs, it took people back to the unlinked collection page. I'm trying to make the collection pages work so I can at least use breadcrumbs (though I'd rather have next/prev back).

Thank you

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4 hours ago, tuanphan said:

/* border under products */ .products.collection-content-wrapper .grid-item { border-bottom: 1px solid black; } .products .grid-item .sqs-add-to-cart-button { b

Thank you, worked a charm!