<div id="main">
  <div class="container">
<div class="accordion" id="faq">
                    <div class="card">
                        <div class="card-header" id="faqhead1">
                            <a href="#" class="btn btn-header-link" data-toggle="collapse" data-target="#faq1"
                            aria-expanded="true" aria-controls="faq1">S.S.S</a>
                        </div>

                        <div id="faq1" class="collapse show" aria-labelledby="faqhead1" data-parent="#faq">
                            <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. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea
                                proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim
                                aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                            </div>
                        </div>
                    </div>
                    <div class="card">
                        <div class="card-header" id="faqhead2">
                            <a href="#" class="btn btn-header-link collapsed" data-toggle="collapse" data-target="#faq2"
                            aria-expanded="true" aria-controls="faq2">S.S.S</a>
                        </div>

                        <div id="faq2" class="collapse" aria-labelledby="faqhead2" data-parent="#faq">
                            <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. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea
                                proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim
                                aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                            </div>
                        </div>
                    </div>
                    <div class="card">
                        <div class="card-header" id="faqhead3">
                            <a href="#" class="btn btn-header-link collapsed" data-toggle="collapse" data-target="#faq3"
                            aria-expanded="true" aria-controls="faq3">S.S.S</a>
                        </div>

                        <div id="faq3" class="collapse" aria-labelledby="faqhead3" data-parent="#faq">
                            <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. Nihil anim keffiyeh helvetica, craft beer labore wes anderson cred nesciunt sapiente ea
                                proident. Ad vegan excepteur butcher vice lomo. Leggings occaecat craft beer farm-to-table, raw denim
                                aesthetic synth nesciunt you probably haven't heard of them accusamus labore sustainable VHS.
                            </div>
                        </div>
                    </div>
                </div>
    </div>
  </div>
#main {
  margin: 50px 0;
}

#main #faq .card {
  margin-bottom: 30px;
  border: 0;
}

#main #faq .card .card-header {
  border: 0;
  -webkit-box-shadow: 0 0 20px 0 rgba(213, 213, 213, 0.5);
          box-shadow: 0 0 20px 0 rgba(213, 213, 213, 0.5);
  border-radius: 2px;
  padding: 0;
}

#main #faq .card .card-header .btn-header-link {
  color: #fff;
  display: block;
  text-align: left;
  background: #FFE472;
  color: #222;
  padding: 20px;
}

#main #faq .card .card-header .btn-header-link:after {
  content: "\f107";
  font-family: 'Font Awesome 5 Free';
  font-weight: 900;
  float: right;
}

#main #faq .card .card-header .btn-header-link.collapsed {
  background: #A541BB;
  color: #fff;
}

#main #faq .card .card-header .btn-header-link.collapsed:after {
  content: "\f106";
}

#main #faq .card .collapsing {
  background: #FFE472;
  line-height: 30px;
}

#main #faq .card .collapse {
  border: 0;
}

#main #faq .card .collapse.show {
  background: #FFE472;
  line-height: 30px;
  color: #222;
}
/* 

Ferdi Sahin
http://www.ferdisahin.net
frdishin (at) gmail.com

*/

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

  1. https://code.jquery.com/jquery-3.3.1.slim.min.js
  2. https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.14.6/umd/popper.min.js
  3. https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/js/bootstrap.min.js