Equal Sidebar Columns

I have used the basic Hueman configuration for numerous websites, but I’ve never run into this issue:

In a nutshell, it appears that the full-width logo we want to use in the header is off-center. It actually isn’t — it’s perfectly centered — but because the left and right sidebars are of different widths, it makes the page look unbalanced on a full-size screen.

For example:

https://laurelcollege.org/laurel-lions-athletics

In this instance, “LAUREL COLLEGE LIONS ATHLETICS” appears off-center because of the different sidebar column widths.

We are using a child theme. Is there a simple way to set the sidebar column widths to the same, equal value (as a sitewide option) in order to balance the page?

Thank you!

V.S.

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