How to edit blog page layout?

[TPSpy]

Hey guys, 

I am having some difficulty in editing a blog page layout. I can't even select the "section" to change the background color. 

I would like my blog to look like https://whiskeyball.com/blogs/learn-more-about-using-ice-ball-sphere-trays or like this https://mockupsforfree.com/wp-content/uploads/2018/09/Blog-1.png. 

How can I do that? Thanks!

[whitemonkey]

Having an up to date theme is always a good idea...... @mery3smith    if u havent changed any html code,  everything else will be transfered..  just gotta find one u like.   

[justinepk]

Hey! Did you ever figure this out? It is driving me nuts lol