@charset "UTF-8";

#USB31 {
    background: url("../images/usb_1920.jpg") center center no-repeat;
    height: 776px;
}

#USB31 .frame{            
    position: absolute;  
    left: 182px;
    top: 164px;
    width: 890px;
    height: 247px;                      
}


@media screen and (max-width: 1366px) {    

    #USB31 {
        background: url("../images/usb_1366.jpg") center 0 no-repeat;
        height: 575px;
    }   
#USB31 .frame{            
    left:96px;
top:93px;
width:768px;
height:156px;                    
}
}


@media screen and (max-width: 960px) {

    #USB31 {
        background: url("../images/usb_960.jpg") center bottom no-repeat;
        height: 700px;
    }   
#USB31 .frame{            
left:4px;
top:67px;
width:614px;
height:177px;}
}


@media screen and (max-width: 640px) {

    #USB31 {
        background: url("../images/usb_640.jpg") center bottom no-repeat;
        height: 640px;
    }
}