How to preserve all comment?

[FE-jw]

Hello, Thanks your vscode extension.
I have a question.

I want to preserve all comment. no remove.
Not just "/*! comment /"
but "/ comment */"

What settings should I make?

[m-dwork]

This would be useful. But is a clean-css related issue / feature request, and probably has nothing to do with the vscode extension here.