Question : problem in firefox

Hi.
I am a developer and I am  having a problem in firefox, the dimensions of the page on the localhost are different than the online one only in firefox.
I tried to remove the add-ons but nothing happen.
Can any one help.

Attachments:

short1.jpg (70 KB)  (File Type Details) 

screen-locally

short2.jpg (84 KB)  (File Type Details) 

screen-online

Answer : problem in firefox

using firefox, in each page, press CTRL + 0

and see if it still has different width.
if yes,
you must be referring a CSS file that has absolute path in your local host but is not visible when the site is online.