Modifying the Box Style?

Hi,

I don’t know how this guy design the Box code (Check the page: https://top10suggest.com/best-baby-monitor/ ). I’ve tried many times but can’t able to make my site like the top10suggest.com Website. Here is a screenshot link: https://prntscr.com/er6rg5
Please help me to make my like the website. I like their box style too much. I want to create box like them.

Thank You