Minor notes .
I didn't realize the top menu at first. Might be too subtle.
I tested it on my phone, chrome and Firefox.
Chrome
+ doesn't work with swipe gesture.
+ arrow buttons: About 10% of the time the site scrolls 2 columns.
While swipe works on ffx, but is giving false positives. If I scroll up / down. Ex displacement of 10px x, 300px y, it pages.