How to Edit the CSS File of the Installed Plugin in Wordpress

I want to edit the CSS File of the Installed Plugin in Wordpress for some customization of the design.

I tried to found the css file of the installed plugin by navigating through Plugins --> Installed Plugin -->Editor. In that I did'nt find the css file of that plugin instead I found only the .php extension files for the installed plugin.

So i "installed Custom CSS Editor Plugin" and i tried to override the some of the CSS property of that plugin in the custom CSS Editor but the changes i made in that custom css is not reflecting on the web page but i tried to edit the css using inspect element on the browser is working correctly.

And then i tried the same CSS property on the Style.css file for the installed Theme, it is also not reflecting on the web page.

could anyone help me to understand how to edit the css properties of the installed plugin?

thanks in advance.

via Chebli Mohamed