In Leighton v. The Hower Corp. (1948), 149 Ohio St. 72, 77 N.E.2d 600, while the plaintiff was in the defendant department store, she went into the ladies' room. The floor of the ladies' room was six inches above the store's floor. When she left the ladies room, she was "oblivious" to the drop at the bathroom door and fell. The Court held that the plaintiff's injury was caused by her lack of due care and entered judgment for the merchant.