@charset "UTF-8";
#sound {
    background:#000 url(../images/sound_1920.jpg) center bottom no-repeat;
    padding:100px 0 780px;
}

#sound .frame {
    width: 1066px;
    margin: 0 auto;
}



@media screen and (max-width: 1366px) {
    #sound {
        background-image: url("../images/sound_1366.jpg") ;       
        padding:100px 0 610px;
    }
    #sound .frame {
        width: 696px;
    }
}

@media screen and (max-width: 960px) {
    #sound {
        background-image: url(../images/sound_960.jpg) ;   
        padding:80px 0 480px;
    }
    #sound .frame {
        width: 550px;
    }
}

@media screen and (max-width: 640px) {
    #sound {
        background-image: url(../images/sound_640.jpg);      
        padding:70px 0 360px;
    }
}