Change Firefox theme locally with CSS (without any extension)

Posted by Email on Super User See other posts from Super User or by Email
Published on 2012-04-07T11:49:23Z Indexed on 2012/04/07 17:35 UTC
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firefox

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css

I have some modifications I want to make WITHOUT installing extensions.

eg: max width of tab and height of menu,

In previous versions you could have it done via:

about:config ->browser.tabs.tab.maxWidth

Since FF4 it should be done with CSS. Now I searched the default theme:

C:\Users\wetcat\AppData\Roaming\Mozilla\Firefox\Profiles\feriz.default
and
C:\Program Files (x86)\Mozilla Firefox

In the second I could find the extension -> theme but without any CSS. In the AppData I couldn't find any CSS or theme folder.

WHERE is the file to create or alter the CSS??

I'm using Firefox 11.

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