Black boxes run together on secondary menu pages

I purchased the upgraded version of the Sixteen theme. On menu pages (not the home page), there is an extra line space that appears between Blog titles in the black picture boxes. This makes the black boxes bleed together and look really confusing. See this page vs. my home page: https://www.chasingmaslow.com/category/inhealth/

Please help. Especially since I paid for the upgrade version of this theme, I see this as a pretty basic feature that should be fixed. It looks very unpolished on those pages.

Thank you so much for your help with this.

Caryn