gulp. gulp-if. How to call multiple plugins?

Question

JavaScript

Hello.
Please tell me how to implement a call to several plugins for css.
codepen.io/Bonauze/pen/rezxNz
prntscr.com/alj39w
Error code: prntscr.com/alj3sa
Thanks in advance for any help.

Answer 1

each plugin has its own pipe and its own gulpif
syntax is this:
you are calling cssnano on non-css files