.elem, .elem * {
	box-sizing: border-box;
	margin: 0 !important;	
}
.elem {
	display: inline-block;
	padding: 5px;
	height: auto;
	background-clip: padding-box;
    background-color: #fff;
    border: 1px solid #ddd;
  border-radius: 4px;
}
.elem > span {
	display: block;
	cursor: pointer;
	height: 0;
	padding-bottom:	70%;
	background-size: cover;	
	background-position: center center;
}
<!-- LIGHTBOX FADING SHOW/HIDE EFFECT (as explained in documentation) -->
.lcl_fade_oc.lcl_pre_show #lcl_overlay,
.lcl_fade_oc.lcl_pre_show #lcl_window,
.lcl_fade_oc.lcl_is_closing #lcl_overlay,
.lcl_fade_oc.lcl_is_closing #lcl_window {
	opacity: 0 !important;
}
.lcl_fade_oc.lcl_is_closing #lcl_overlay {
	-webkit-transition-delay: .15s !important; 
	transition-delay: .15s !important;
}