Joomla 2.5 table isn't straight in Firefox (line is broken sort of)

In my browser Mozilla ver. 28 there's a misaligned table line

[abrodski]

Hello!
I have this small problem in Mozilla FF. When I open the article in FF (I usually use this program), the table line isn't straight.
I should probably add that after re-loading the page, this issue corrects itself somehow.
Strangely enough, some ppl say they can't see my problem in their own Mozilla browsers.

Thanks!

[edited by: not2easy at 2:00 pm (utc) on Feb 8, 2016]
[edit reason] charter compliance [/edit]

[engine]

Can you post some code for us to look at?