@charset "UTF-8";

#USB {
    background: url("../images/usb_1920.jpg") center 0 no-repeat;
    height: 660px;
}
    #USB .frame {
    	top: 100px;
    }


@media screen and (max-width: 1366px) {
    #USB {
        background: url("../images/usb_1366.jpg") center 70px no-repeat;
        height: 540px;
    }
        #USB .frame {
			top: 60px;
        }
}


@media screen and (max-width: 960px) {
    #USB {
        background: url("../images/usb_960.jpg") center 80px no-repeat;
        height: 520px;
    }
        #USB .frame {
			top: 70px;
        }
}


@media screen and (max-width: 640px) {
    #USB {
        background: url("../images/usb_640.jpg") center bottom no-repeat;
        height: 388px;
    }   
        #USB .frame {
			top: 35px;
        }
}