#design {
    background-image: url(../images/design_1920.jpg);
    height: 876px;
    background-repeat: no-repeat;
}

@media screen and (max-width: 1366px) {
    #design {
        background-image: url(../images/design_1366.jpg);
        height: 649px;
    }
}

@media screen and (max-width: 960px) {
    #design {
        background-image: url(../images/design_960.jpg);
        height: 590px;
        background-position: center -50px;
    }
}

@media screen and (max-width: 640px) {
    #design {
        background-image: url(../images/design_640.jpg);
        height: 463px;
    }
}