Live Demo: Bootstrap Classic Confirmation Modal

<!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 Classic Confirmation Modal</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto|Varela+Round">
<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 {
	font-family: 'Varela Round', sans-serif;
}
.modal-confirm {		
	color: #636363;
	width: 550px;
}
.modal-confirm .modal-content {
	padding: 20px;
	border-radius: 5px;
	border: none;        
}
.modal-confirm .modal-header {
	padding: 0 15px;
	border-bottom: none;   
	position: relative;
}
.modal-confirm h4 {
	display: inline-block;
	font-size: 26px;
}
.modal-confirm .close {
	position: absolute;
	top: -5px;
	right: -5px;
}
.modal-confirm .modal-body {
	color: #999;
}
.modal-confirm .modal-footer {
	background: #ecf0f1;
	border-color: #e6eaec;
	text-align: right;
	margin: 0 -20px -20px;
	border-radius: 0 0 5px 5px;
}	
.modal-confirm .btn {
	color: #fff;
	border-radius: 4px;
	transition: all 0.4s;
	border: none;
	padding: 8px 20px;
	outline: none !important;
}	
.modal-confirm .btn-info {
	background: #b0c1c6;
}
.modal-confirm .btn-info:hover, .modal-confirm .btn-info:focus {
	background: #92a9af;
}
.modal-confirm .btn-danger {
	background: #f15e5e;
}
.modal-confirm .btn-danger:hover, .modal-confirm .btn-danger:focus {
	background: #ee3535;
}
.modal-confirm .modal-footer .btn + .btn {
	margin-left: 10px;
}
.trigger-btn {
	display: inline-block;
	margin: 100px auto;
}
</style>
</head>
<body>
<div class="text-center">
	
	<a href="#myModal" class="trigger-btn" data-toggle="modal">Click to Open Confirm Modal</a>
</div>

<div id="myModal" class="modal fade">
	<div class="modal-dialog modal-confirm">
		<div class="modal-content">
			<div class="modal-header">			
				<h4 class="modal-title">Confirmation</h4>	
                <button type="button" class="close" data-dismiss="modal" aria-hidden="true">&times;</button>
			</div>
			<div class="modal-body">
				<p>Are you sure you want to delete your account? This action cannot be undone and you will be unable to recover any data.</p>
			</div>
			<div class="modal-footer">
                <a href="#" class="btn btn-info" data-dismiss="modal">Cancel</a>
				<a href="#" class="btn btn-danger">Yes, delete it!</a>
			</div>
		</div>
	</div>
</div>     
</body>
</html>