How to get rid of unused classes?

Question

css

Hello.
Written over 12,000 lines of code in CSS, about half of the classes are not used.
Interested in the following: is it possible to somehow get rid of unused classes?
Maybe there are some plugins for PHPStorm, or other tools?
Thanks in advance for your reply.

Answer 1

Are you seriously?
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Answer 2

https://intellij-support.jetbrains.com/hc/en-us/co...
https://intellij-support.jetbrains.com/hc/en-us/co...
https://intellij- support.jetbrains.com/hc/en-us/co...
https://github.com/purifycss/purifycss
https://www.google.com.ua/search?q=css+remove+unus.. .