.lightbox {display:none;position:fixed;z-index:999;
	top:0;left:0;right:0;bottom:0;padding: 1em;background: rgba(0, 0, 0, 0.8);}
.lightbox:target {display:block;}
.lightbox a{display: block;width: 100%;height: 100%;}
.lightbox img, .lightbox video {
	max-width:calc(100% - 100px);
	max-height:calc(100% - 100px);
	position: absolute;top: 50%;left: 50%;
	transform: translate(-50%, -50%);
	-ms-transform: translate(-50%, -50%);}