MyTechnology Blog Website Issue

I just want to keep my website post in the middle. according to this https://backlinko.com/introducing-the-content-marketing-hub

can you help me for carrying my all posts according to the above-linked post?

This is my website post
https://shiv1367.com/common-wordpress-errors-and-how-to-fix-them

The page I need help with: [log in to see the link]