.top-visual .inner {
    background-image: url(../img/cm03_sp_main.png);
}

@media only screen and (min-width: 737px) {
    .top-visual .inner {
        background-image: url(../img/cm03_main.jpg);
    }
}

.btm-photo {
    background-image: url(../img/cm03_btm.png);
}