This is kind of a hacky implementation.
We are using a negative margin to remove the left&right padding from the content div and expand the background color.
What we should do instead, is move the
padding: 0 60px 20px; (and following media queries)
from "mind-post_central-column" to "mind-post_content", and set the mind-post_central-column side padding to zero, if necessary.
This way, only the actual post content will be "centered" and with spacing at the sides, while other stuff (post info, comments) can have their own custom padding and spacing.
In the case of the info box, it should have zero margin (so be 100% large) with spacing (padding) inside of the box itself.
Bea
a39ed9a787