chatty.github.io/slideshow.css

.slideshow_main {
	background: #EEE;
	border-radius: 6px;
	height: 600px;
	position:relative;
	white-space: nowrap;
	text-align: center;
	padding: 8px 0;
}

.slideshow_main img {
	display: inline-block;
	max-height: 600px;
	max-width: 1000px;
	margin: auto;
	vertical-align: middle;
	transition: opacity .25s ease-in-out;
	-moz-transition: opacity .25s ease-in-out;
	-webkit-transition: opacity .25s ease-in-out;
}

#slideshow .slideshow_images img {
	height: 100px;
	margin: 0 4px;
}

.slideshow_images {
	text-align:center;
	margin-top: 10px;
}

.slideshow_active_image {
	padding-bottom: 4px;
	border-bottom: 3px solid #333;
}

.slideshow_caption {
	color: white;
	width: 100%;
	text-align: center;
	background: black;
	padding: 8px 0;
	opacity: 0.7;
}

.slideshow_next, .slideshow_prev {
	position: absolute;
	cursor: pointer;
	top: 0;
	vertical-align: middle;
	color: white;
	font-weight: bold;
	height: 100%;
	width: 10%;
}

.slideshow_next span, .slideshow_prev span {
	margin-top: -20px;
	position: absolute;
	top: 50%;
	transition: 0.6s ease;
	padding: 12px;
	background-color: rgba(0,0,0,0);
	-webkit-touch-callout: none; /* iOS Safari */
	-webkit-user-select: none; /* Safari */
	-khtml-user-select: none; /* Konqueror HTML */
	-moz-user-select: none; /* Firefox */
	-ms-user-select: none; /* Internet Explorer/Edge */
	user-select: none; /* Non-prefixed version, currently
			  supported by Chrome and Opera */
}

.slideshow_next:hover span, .slideshow_prev:hover span {
	background-color: rgba(0,0,0,0.8);
}

.slideshow_next {
	right: 5px;
}

.slideshow_next span {
	right: 0;
	border-radius: 10px;
}

.slideshow_prev {
	left: 0;
}

.slideshow_prev span {
	left: 5px;
	border-radius: 10px;
}

.slideshow_hidden {
	display: none;
}

.vertical_helper {
	display: inline-block;
	height: 100%;
	vertical-align: middle;
}