@media screen and (max-width: 637px) {
.xr_mvp_2 {display: block;}
.xr_mvp_1 {display: none;}
.xr_pbd {margin-left: -160px;}
#xr_xr {width: 320px; height: 457px}
}
@media screen and (min-width: 638px) {
.xr_mvp_2 {display: none;}
.xr_mvp_1 {display: block;}
.xr_pbd {margin-left: -477px;}
#xr_xr {width: 955px; height: 750px}
}