.lightbox {
	position:fixed;
	top:0px;
	left:0px;
	height:100%;
	width:100%;
	z-index:7;
	display:none;
}
.lightbox.visible {
	background-color:rgba(0,0,0,.5);
}
.lightbox.clickable {
	cursor:pointer;
}
.lightbox.showing {
	display:block;
}