It is hereby declared to be the intent of Council that the several provisions of this Planning and Zoning Code shall be separable, in accordance with the provisions set forth below:
(a) If any provision of this Code is declared to be invalid by a decision of any court of competent jurisdiction, the effect of such decision shall be limited to that provision or provisions which are expressly stated in the decision to be invalid. Such decision shall not affect, impair or nullify this Code as a whole or any other part thereof, and all other provisions of this Code shall continue to be separately and fully in force and effect.
(b) If the application of any provision of this Code to any zoning lot, building or other structure is declared to be invalid by a decision of any court of competent jurisdiction, the effect of such decision shall be limited to that zoning lot, building or other structure immediately involved in the controversy, action or proceeding in which the judgment or decree of invalidity is rendered. Such decision shall not affect, impair or nullify this Code as a whole or the application of any provision thereof to any other zoning lot, building or other structure.