Delete div node with id "blackScreen". (Right click -> Inspect Element)
That didn't fix it (still same non-scrolling issue as parent).
However this fixes the second problem ;-)
Array.prototype.slice.call(document.getElementsByClassName("footerText")).forEach(function(e) { e.innerHTML = 'Published on July 11, 2015.'; })
Also, it says it was published July 13th 2015 - that's 2 days from now :-)