@media /*32x15*/ (max-device-aspect-ratio: 510/1000) {.body_bg {background: url(../img/32x15/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*16x9*/ (min-device-aspect-ratio: 511/1000) and (max-device-aspect-ratio: 580/1000) {.body_bg {background: url(../img/16x9/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*5x3*/ (min-device-aspect-ratio: 581/1000) and (max-device-aspect-ratio: 610/1000) {.body_bg {background: url(../img/5x3/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*8x5*/ (min-device-aspect-ratio: 611/1000) and (max-device-aspect-ratio: 640/1000) {.body_bg {background: url(../img/8x5/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*3x2*/ (min-device-aspect-ratio: 641/1000) and (max-device-aspect-ratio: 700/1000) {.body_bg {background: url(../img/3x2/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*4x3*/ (min-device-aspect-ratio: 701/1000) and (max-device-aspect-ratio: 770/1000) {.body_bg {background: url(../img/4x3/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }
@media /*5x4*/ (min-device-aspect-ratio: 771/1000) and (orientation: portrait) {.body_bg {background: url(../img/5x4/index_bgp.jpg) no-repeat; background-size: 100% 100%; } }

@media /*5x4*/ (max-device-aspect-ratio: 1290/1000) and (orientation: landscape) {.body_bg {background: url(../img/5x4/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*4x3*/ (min-device-aspect-ratio: 1291/1000) and (max-device-aspect-ratio: 1410/1000) {.body_bg {background: url(../img/4x3/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*3x2*/ (min-device-aspect-ratio: 1411/1000) and (max-device-aspect-ratio: 1550/1000) {.body_bg {background: url(../img/3x2/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*8x5*/ (min-device-aspect-ratio: 1551/1000) and (max-device-aspect-ratio: 1630/1000) {.body_bg {background: url(../img/8x5/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*5x3*/ (min-device-aspect-ratio: 1631/1000) and (max-device-aspect-ratio: 1710/1000) {.body_bg {background: url(../img/5x3/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*16x9*/ (min-device-aspect-ratio: 1711/1000) and (max-device-aspect-ratio: 1950/1000) {.body_bg {background: url(../img/16x9/index_bg.jpg) no-repeat; background-size: 100% 100%; } }
@media /*32x15*/ (min-device-aspect-ratio: 1951/1000) {.body_bg {background: url(../img/32x15/index_bg.jpg) no-repeat; background-size: 100% 100%; } }