@media (max-width:767px) {

    #bg {
        background-image: url(../module/picture/BG-1.png);
        background-repeat: no-repeat;
        background-position: right;
        width: 100vw;
        height: 100vh;
        background-size: cover;
    }
}

@media (min-width:768px) {


    #bg {
        background-image: url(../module/picture/BG.png);
        background-repeat: no-repeat;
        background-position: center;
        width: 100vw;
        height: 100vh;
        background-size: cover;
    }
}