#umg-gallery{
	list-style: none;
	padding: 0;
	margin: 0;
	overflow: hidden;
	position: relative;
	-moz-column-count: 3;
	-webkit-column-count: 3;
	column-count: 3;
	-moz-column-gap: 1em;
	-webkit-column-gap: 1em;
	column-gap: 1em;
}
#umg-gallery .gallery-item{
	display: inline-block;
	margin: 6px 0;
	overflow: initial;
	position: relative;
	width: 100%;
}
#umg-gallery .attachment-manager,
#umg-gallery .video-manager{
	position: absolute;
	z-index: 9;
	top: -3px;
	left: 3px;
}
#umg-gallery img{
	max-width: 100%;
	width: 100%;
	object-fit: cover;
}

@media screen and (max-width:480px) {
	#umg-gallery{
		-moz-column-count: 2;
		-webkit-column-count: 2;
		column-count: 2;
	}
}
@media screen and (max-width:360px) {
	#umg-gallery{
		-moz-column-count: 1;
		-webkit-column-count: 1;
		column-count: 1;
	}
}