Font size default

I am modifying my css to adjust the fonts. On OJS-2.4.8 you have a button to change the fonts for the site to default.
Can any one tell me what css items to use to set the font-size to 12 for the whole site?
I was looking at fontController.js and the comments are saying #controls and #content div but that is not making any difference.


The default font size is selected in the third parameter of the fontSize() call here:

See the shared library for the function definition:

It worked for us, we have implemented it on


May I please know what Changes you made? I did the similar changes in block.tpl (copied and pasted the above code ) but its not working