Lock Down Stylint Rules

[stolinski]

• Only CSS vars for
• Font sizes
• Colors
• Media Queries
• ...

[stolinski]

Custom media queries currently hitting on prefers dark, wondering if we want to allow that.

[stolinski]

Added

	"stylelint-declaration-strict-value",
	"stylelint-media-use-custom-media",
	"stylelint-no-undefined-classes"

and a few select rules.

[stolinski]

added
stylelint-value-no-unknown-custom-properties
so that no undefined custom props are used.