Interesting... I do see about half an inch of white space when I follow the link (http://blue-office-battery.webflow.io/), but I still can't see it when viewing the pubic share link.
I tend to avoid using columns the way you have, because Webflow includes some automatic settings for columns, which you can see in X-Ray Mode (note the red areas in the screenshot), but not in the Styles panel.
Instead, I would use two divs and float the first one left and the second one right.
I would also try removing the bottom border from the Footer section (since you won't really be able to see it anyway without the bottom white space).
Then I would try adding classes to all of the footer elements so you can specify the margins and padding.