How to change the size of a button in CKEDITOR?

In CKEDITOR there is a button "font Size". Maybe "Size" of its length and would fit. But for the Russian content no. Question - how to change the width? The styles are all minimized. It seems to me that to go into standard css and change is the wrong option that can and should be done somehow differently. How to do it?
June 10th 19 at 16:35
1 answer
June 10th 19 at 16:37
in css
there is a main css file is minimized, it is necessary to find a class that sets the default value and write your own, that is, to hack this file and then forget about it for updates

how to do it through the settings I never found

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