When I export this site: Webflow - railwayeng.org the site shows just fine in Chrome, but this is how it looks in FF: http://screencast.com/t/OUkfxB8m5K - the width does not fit the browser window, horizontal scroller appears, text is not wrapped.
The URL is Новини и събития - Национално сдружение-общество на инженерите по железен път .
This happens in Win 7, Acer P203W, 1280x768, FF 49.0.1
Here is my public share link: LINK
(how to access public share link)