CSS for custom image collage page template

collage.css

.collage  {
	background: #fff url(../images/hero-img.jpg) no-repeat center center;
	background-size: cover;
	height: 200px;
	padding: 0;
}
.collage-wrap a {
	text-decoration: none;;
}
/* sm */
@media (min-width: 768px) {
	.collage-wrap {
		height: 44vh;
	}
	.collage-inner-wrap {
		height: 50%;
	}
	.collage  {
		height: 100%;
	}
}
/* Show the overlay and text on screens smaller than 992 */
.hvr-sweep-to-right {
	align-items: center;
	background: rgba(0, 0, 0, 0.55);
	display: flex;
	justify-content: center;
	height: 100%;
	opacity: 1;
	position: relative;
	width: 100%;
}
.hvr-sweep-to-right p {
	color: #ffffff;
	opacity: 1;
}
/* Hover effects 992 and larger*/
@media (min-width: 992px) {
	.hvr-sweep-to-right {
		background: none;
		opacity: 0;
	  position: relative;
	  transform: perspective(1px) translateZ(0px);
	  transition-duration: 0.5s;
	}
	.hvr-sweep-to-right::before {
		background: rgba(0, 0, 0, 0.8);
		bottom: 0;
		content: "";
		left: 0;
		position: absolute;
		right: 0;
		top: 0;
		transform: scaleX(0);
	  transform-origin: 0 50% 0;
	  transition-duration: 0.3s;
	  transition-property: transform;
	  transition-timing-function: ease-out;
		z-index: -1;
	}
	.hvr-sweep-to-right:hover,
	.hvr-sweep-to-right:focus,
	.hvr-sweep-to-right:active {
		opacity: 1;
	}
	.hvr-sweep-to-right:hover::before,
	.hvr-sweep-to-right:focus::before,
	.hvr-sweep-to-right:active::before {
	  transform: scaleX(1);
	}
	.hvr-sweep-to-right p {
		color: transparent;
		opacity: 0;
		transition-delay: 0.5s;
		transition-duration: 0.25s;
	}
	.hvr-sweep-to-right:hover p {
		color: #ffffff;
		opacity: 1;
	}
}