Need help testing the layout - just open the link in firefox, can you help?

Question

css

The essence of the problem: the customer's browser (in his words - MF of the latest version) does not display the titles correctly.
In all my browsers, including several older versions and the latest version of MF, everything displays fine.
What it looks like for me:

What it looks like for the customer:

Need help: just open volh.bookreev.com in Mozilla and tell how the headings are displayed - like in the first option or like in the second.
Thanks

Answer 1

I have this:
By the way, in Chrome I have the same situation as on the screen above.
I don't know if it's intended or not, but in the styles for
the bottom padding is set to 0 pixels. I played around with the values ​​and managed to make the display as you have on my browsers (I note that initially everything looked like your client). Maybe it's the salt.

Answer 2

Sneaky website ad

Answer 3

so as not to distract people - 13 services for testing the site in different browsers

Answer 4

Maxthon 4 - displays incorrectly on Webkit, correctly on Tident.