CSSType can be used to type check CSS properties and values in CSS.CSSType package provides autocompletion and type checking for CSS properties and values using TypeScript and Flow definitions.CSSType usage was found in Inferno's codebase at specific locations like package.json, core/types.ts, and tests/styles.spec.tsx.In core/types.ts, CSSType's PropertiesHyphen is imported and used as a type in the HTMLAttributes interface to handle kebab-cased CSS properties.