Hi,
I am trying to create a post in Cornerstone, but I am stuck at the beginning - I am not able to disable top and side margin on my post, which forces the content to the side, so it ends up not being aligned with the post title. Please see the pink rectangles with question mark.

How should I disable this?
Each margin is set to 0. The only way to make it look better is to put margin into negative values, which I guess is a bad practice. Also post created with WP Bakery and ordinary editor are aligned just fine.
Thanks.