Why is half of the site not showing up in FF?

Question

Browsers

I've already broken my head, I don't see more than half of the site in mozilla, in opera everything is ok, in IE it's also normal, but not in mozilla.
I cleaned the Ccleaner browser - ohm, rebooted the computer, the result is 0 I have been struggling since
yesterday, I haven’t edited anything on the site itself, I don’t understand, at least kill me
Here is the site itself http://newsrbk.ru/

Answer 1

Check plugins in your browser. Maybe some Adblock plugin is blocking the site? On pure Firefox everything works fine. By the way, pop-ups are evil.

Answer 2

thanks for the hint, now I'm turning everything off and let's see what happens, by the way, I have a lot of add-ons for mozillas like RDS bar, etc., maybe they glitched.
On account of the windows, stuffed ads to cover expenses, let's see how much I earn, if it's not enough I'll remove them better

Answer 3

here is a screenshot of my screen

Answer 4

so far without results, I scan the computer for viruses, most likely the virus has climbed