Add this to your userContent.css: <http://db48x.net/MDN-fix.css> http://db48x.net/MDN-fix.css>. It fixes the whitespace problems, but I haven't touched fonts. F

Add this to your userContent.css: <http://db48x.net/MDN-fix.css> http://db48x.net/MDN-fix.css>. It fixes the whitespace problems, but I haven't touched fonts. Font size is best corrected by zooming in; Firefox will even remember your zoom level across the whole domain, so you only have to do that once.