.f1-img-1{top:12px;left:136px;width:434px;height:226px;background-position:-0px -450px}.f2-img-1{top:12px;left:136px;width:434px;height:225px;background-position:-0px -225px}.f3-img-1{top:12px;left:136px;width:434px;height:225px;background-position:-0px -0px}