Help resizing layout of my post pages


I am trying to resize the left-hand-side of my post page. I want the writing and photos to extend further to towards the left-hand-side. I would like them to extend near enough to grid line number 14.

I want all the photos to be the same size on each page and I want the whole thing to be responsive for all devices.

I would also like the comment and text boxes to all be alined.

I have tried everything to resize the page but I just can't figure out how to do it.

Can you please provide instructions or take a look at the pages please? I have granted access.

The page in the screen shot is