No law enacted after January 12, 1977, denies or limits any power or function of a home rule unit, pursuant to paragraphs (g), (h), (i), (j) or (k) of Section 6 of Article VII of the Illinois Constitution, unless there is specific language limiting or denying the power or function and the language specifically sets forth in what manner and to what extent it is a limitation on or denial of the power or function of a home rule unit.
5 ILCS 70/7