如果合同与法律不一致，which one will prevail?

Normal wear and tear. The landlord may not charge you for normal wear and tear on the premises and may only charge for actual abnormal damage. For example, if the carpet simply becomes more worn because you and your guests walked on it for a year, the landlord may not charge you for a new carpet. If your water bed leaks and the carpet becomes mildewed as a result, you may be charged.