What can I add to make my site look more like this one? (link)

I want my site to look more like this one:
https://www.trinitypawling.org/
I’m using the avada theme, so I realize that my flex sliders won’t look as nice, but I’m interested in the boxes below, titled “news” and “Athletic results”. What are they called, and what plugins can I install to create them?
What can i do to make my site look better in general? It’s a community service one for my school, its the link:
https://trinityschoolnycservices.net/

it’s a bit rough but that’s cause I’m just startin out. Thanks so much!