Annoying squiggly lines under properly defined and working mixins in VS Code

[Maryanos]

Hi, I've just moved from Sass to PostCss and I'm having an annoying problem with mixins that are working correctly but are marked by VS code as an error with annoying squiggly lines.
You can see how they are defined and used on screenshots below, this leads of course to more underlined properties even if all is correctly working.
Also package.json included below.
Is there any help I can get from you guys to make my life bright again?

[ai]

You need to ask VS Code team