There are a few different ways that you can reduce unused CSS on your WordPress website.
However, it would be quite a difficult task to completely remove all unused CSS in WordPress. Because of the way WordPress works behind the scenes, some unused CSS may be hard to find and remove.
That said, we’ll show you two methods to remove unused CSS, and you can choose the one that works best for you.
Method 1. Remove Unused CSS in WordPress using WP Rocket
Method 2. Remove Unused CSS in WordPress using Asset CleanUp
Select the unused code and press backspace :)