I change the language, so freepbx used rtl css style. but the problem is that the buttons are weird when there are two or more buttons near each other also the blue line which separate each part of a page is on the left side and in the welcome page blogs and reports are mixed together. what should I do to fix this problem?

First you should tell us what version of FreePBX. Then you should tell us what language.

its version 12.0.45 and persian language.

Unfortunately there’s nothing we can do for wrong buttons in version 12.

why? you mean the problem solved in version 13? there is nothing that I can do for it?

12 doesnt have very much (if anything) translated for Persian.

Secondly the formatting was fixed in 13 and any new formatting changes will only be addressed in 13