RELATED:
I also cannot reproduce your issue.
Both my screenshots are from Windows 10. Though, the OS shouldnt make a difference, since HTML/CSS is at the browser level, not OS level.
UNRELATED:
Just for the sake of wanting to help with your browser display issue, can you do something about the seizure inducing flashing-rainbow gif animation on the right column? Its not helping to debug the issue at all.
Seriously. Its literally assaulting everyone who visits your website.
https://www.techdirt.com/articles/2...arrested-assault-with-deadly-tweet.shtmlhttps://www.washingtonpost.com/nati...8-0c10-11e7-b77c-0047d15a24e0_story.html