Live Demo: Bootstrap Thumbnail Carousel

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<title>Bootstrap Thumbnail Carousel</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:300,400,700">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.7.0/css/font-awesome.min.css">
<script src="https://code.jquery.com/jquery-3.5.1.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js"></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js"></script>
<style>
body {
	background: #ebebeb;
}
h2 {
	color: #696969;
	font-size: 26px;
	font-weight: 300;
	text-align: center;
	position: relative;
	margin: 40px 70px;
	text-transform: uppercase;
	font-family: 'Open Sans', sans-serif;
}
h2::after {
	content: "";
	width: 100%;
	position: absolute;
	margin: 0 auto;
	height: 1px;
	border-radius: 1px;
	background: #d4d4d4;
	left: 0;
	right: 0;
	bottom: 14px;
}
h2 span {
	display: inline-block;
	padding: 0 25px;
	background:#ebebeb;
	position:relative;
	z-index:2;
}
.carousel {	
	margin: 0 auto;
	padding: 0 68px;
}
.carousel .carousel-item {
	text-align: center;
	overflow: hidden;
	height: 160px;
}
.carousel .carousel-item .img-box {
	background: #fff;
	padding: 9px;
	box-shadow: 0 6px 20px -6px rgba(0,0,0,0.4);
}
.carousel .carousel-item img {
	margin: 0 auto;
}
.carousel-control-prev, .carousel-control-next {
	width: 68px;
	background: none;
}
.carousel-control-prev i, .carousel-control-next i {
	font-size: 28px;
	position: absolute;
	top: 50%;
	display: inline-block;
	margin-top: -15px;
	z-index: 5;
	left: 0;
	right: 0;
	color: rgba(0, 0, 0, 0.8);
	text-shadow: 0 3px 3px #e6e6e6, 0 0 0 #000;
}
.carousel-indicators {
	bottom: -40px;
}
.carousel-indicators li, .carousel-indicators li.active {
	width: 10px;
	height: 10px;
	border: none;
	border-radius: 50%;
	margin: 1px 4px;
	box-shadow: inset 0 2px 1px rgba(0,0,0,0.2);
}
.carousel-indicators li {	
	background: #999;
	border-color: transparent;
}
.carousel-indicators li.active {
	background: #555;
}
</style>
</head>
<body>
<div class="container-xl">
	<div class="row">
		<div class="col-md-9  mx-auto">
			<h2><span>Thumbnail <b>Carousel</b></span></h2>
			<div id="myCarousel" class="carousel slide" data-ride="carousel" data-interval="0">
				
				<ol class="carousel-indicators">
					<li data-target="#myCarousel" data-slide-to="0" class="active"></li>
					<li data-target="#myCarousel" data-slide-to="1"></li>
					<li data-target="#myCarousel" data-slide-to="2"></li>
				</ol>   
				
				<div class="carousel-inner">
					<div class="carousel-item active">
						<div class="row">
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/1.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/2.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/3.jpg" class="img-fluid" alt=""></div></div>
						</div>
					</div>
					<div class="carousel-item">
						<div class="row">
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/4.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/5.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/6.jpg" class="img-fluid" alt=""></div></div>
						</div>
					</div>
					<div class="carousel-item">
						<div class="row">
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/7.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/8.jpg" class="img-fluid" alt=""></div></div>
							<div class="col-sm-4"><div class="img-box"><img src="/examples/images/thumbs/9.jpg" class="img-fluid" alt=""></div></div>
						</div>
					</div>
				</div>
				
				<a class="carousel-control-prev" href="#myCarousel" data-slide="prev">
					<i class="fa fa-chevron-left"></i>
				</a>
				<a class="carousel-control-next" href="#myCarousel" data-slide="next">
					<i class="fa fa-chevron-right"></i>
				</a>
			</div>
		</div>
	</div>
</div>
</body>
</html>