hello. I noticed that above the backround image,an empty area appears,filled with the background colour.I see the same in demo page of joomla51 classic template.This occurs only when using latest firefox in my current resolution (1280*1024). I think that this didn't happen until now,is this a firefox-dependant matter?When changing resolution (e.g 1280*960) the area doesn't exist. The same in upper resolutions (1366*768) in laptop. I think there is something about firefox and the resolution weight (at 1024?) All the remaining scrolling down area,is also the same filled with the background colour. Using other browsers,no problem.