#page1 > .bg{ background: url("../image/p1_bg.jpg") no-repeat center center; background-size: 100%;}#page2 > .bg{ background: url("../image/p2_bg.jpg") no-repeat center center; background-size: 100%;}#page3 > .bg{ background: url("../image/p3_bg.jpg") no-repeat center center; background-size: 100%;}