Category page formatting issue

I have a blog and I want to categorize each of the blog topics as a drop down menu. This is usually pretty simple. I just go to the menu and add the category as a menu item, however, when I do this I’m getting the categorized blog posts but the formatting is off. It’s not using the same style the main blog page. Here’s what I’m referring to:

https://blossomingbrittany.co/category/faith/?

I’ve exhausted all efforts to figure this out on my own so I’m hoping you can point me in the right direction. I’m sure it’s an easy fix.

Thank you so much,

B