.slideImage.macbook .slideWrap {
	background: url(macbook-frame.png) center top no-repeat;
    background-size: contain;
}
.slideImage.mac .slideWrap {
	background: url(display-frame.png) center top no-repeat;
    background-size: contain;
}
.slideImage.browser .slideWrap {
	background: url(browser-frame.png) center top no-repeat;
    background-size: contain;
}