Live Demo: Bootstrap Toggle FAQ Accordion

<!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 Toggle FAQ Accordion</title>
<link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Roboto:400,500|Open+Sans">
<link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/css/bootstrap.min.css">
<link rel="stylesheet" href="https://fonts.googleapis.com/icon?family=Material+Icons">
<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: #fff;
}
.accordion .card {
	border-radius: 6px !important;
	border: 1px solid #eceded !important;
	margin-bottom: 5px;
}
.accordion .card .card-header {
	background: #f9fafa;
	padding-top: 7px;
	padding-bottom: 7px;
	margin-bottom: 0;
	font-family: "Roboto", sans-serif;
	border-radius: 6px 6px 0 0;
	border-bottom: none;
}
.accordion .card-header:hover {
	background: #ecf0f0;
}
.accordion .card-header h2 span {
	float: left;
	margin-top: 10px;
}
.accordion .card-header .btn {
	color: #3659a2;
	font-size: 1.04rem;
	width: 100%;
	text-align: left;
	position: relative;
	top: -2px;
	font-weight: 500;
}
.accordion .card-header i {
	float: right;
	font-size: 1.3rem;
	font-weight: bold;
	position: relative;
	top: 5px;
}
.accordion .card-header .btn:hover {
	color: #35589f;
}
.accordion .card-body {
	color: #324353;
	text-align: justify;
	border-top: 1px solid #eceded;
}
.page-title {
	text-align: center;
	margin: 2rem 0;
	font-family: "Roboto", sans-serif;
	position: relative;
}
.page-title::after {
	content: "";
	width: 100px;
	position: absolute;
	margin: 0 auto;
	height: 4px;
	border-radius: 1px;
	background: #3659a2;
	left: 0;
	right: 0;
	bottom: -15px;
}
</style>
<script>
$(document).ready(function(){
	// Add minus icon for collapse element which is open by default
	$(".collapse.show").each(function(){
		$(this).siblings(".card-header").find(".btn i").html("remove");
		$(this).prev(".card-header").addClass("highlight");
	});
	
	// Toggle plus minus icon on show hide of collapse element
	$(".collapse").on('show.bs.collapse', function(){
		$(this).parent().find(".card-header .btn i").html("remove");
	}).on('hide.bs.collapse', function(){
		$(this).parent().find(".card-header .btn i").html("add");
	});
});
</script>
</head>
<body>
<div class="container-xl">
	<div class="row">
		<div class="col-lg-12">
			<h1 class="page-title">FAQ &amp; Answers</h1>
			<div class="accordion" id="accordionExample">
				<div class="card">
					<div class="card-header" id="headingOne">
						<h2 class="clearfix mb-0">
							<a class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">What is Bootstrap Framework? <i class="material-icons">add</i></a>									
						</h2>
					</div>
					<div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordionExample">
						<div class="card-body">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum.</div>
					</div>
				</div>
				<div class="card">
					<div class="card-header" id="headingTwo">
						<h2 class="mb-0">
							<a class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">How to Create Responsive Website with Bootstrap? <i class="material-icons">add</i></a>
						</h2>
					</div>
					<div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordionExample">
						<div class="card-body">Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et.</div>
					</div>
				</div>
				<div class="card">
					<div class="card-header" id="headingThree">
						<h2 class="mb-0">
							<a class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">Does Bootstrap Framework Provide Cross-browser Support? <i class="material-icons">add</i></a>                     
						</h2>
					</div>
					<div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
						<div class="card-body">Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam eu sem tempor, varius quam at, luctus dui. Mauris magna metus, dapibus nec turpis vel, semper malesuada ante. Vestibulum id metus ac nisl bibendum scelerisque non non purus. Suspendisse varius nibh non aliquet sagittis. In tincidunt orci sit amet elementum vestibulum.</div>
					</div>
				</div>
				<div class="card">
					<div class="card-header" id="headingFour">
						<h2 class="mb-0">
							<a class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseFour" aria-expanded="false" aria-controls="collapseFour">Can I Use Bootstrap for Mobile App Development? <i class="material-icons">add</i></a>                               
						</h2>
					</div>
					<div id="collapseFour" class="collapse" aria-labelledby="headingFour" data-parent="#accordionExample">
						<div class="card-body">Anim pariatur cliche reprehenderit, enim eiusmod high life accusamus terry richardson ad squid. 3 wolf moon officia aute, non cupidatat skateboard dolor brunch. Food truck quinoa nesciunt laborum eiusmod. Brunch 3 wolf moon tempor, sunt aliqua put a bird on it squid single-origin coffee nulla assumenda shoreditch et.</div>
					</div>
				</div>
			</div>
		</div>
	</div>
</div>
</body>
</html>