There's a peculiar bug I'm encountering which results in extra spacing on the body or html element. This additional space isn't visible within the normal browsing area of most browsers, only becoming apparent when scrolling to the right side of the screen with the mouse.
To get a clearer understanding of what I'm talking about, please have a look at the staging site I've prepared:
My suspicion is that this issue stems from some CSS error I may have made, but so far I haven't been able to identify its source.