1. A cooking appliance comprising:a cabinet;
an oven cavity mounted in the cabinet;
a cooktop positioned above the oven cavity; and
a mechanism interconnecting the cooktop to the cabinet while permitting the cooktop to be vertically shifted relative to the oven cavity, wherein the mechanism includes at least one mechanical fastener which is configured to be loosened or removed to permit vertical downward shifting of the cooktop relative to the oven cavity, and tightened or replaced to secure the cooktop to the cabinet.