.aurora-gallery-row{
	display:flex;
	flex-wrap:wrap;
}

.photo-thumb-wrapper{
	position:relative;
	width:25%;
	mix-blend-mode: multiply;
}

.photo-thumb{
	width:100%;
	padding-bottom:75%;
	background-size:cover;
	background-position:center;
}

@media screen and (max-width:800px){
	.photo-thumb-wrapper{
		width:50%;
	}
}