Bootstrap collapsible panel with up and down arrow icon

Examples of Bootstrap Accordion with Open/Close Arrows using HTML, JavaScript, jQuery, and CSS. Bootstrap nested accordion with Font-Awesome icons. Animate an open and closing element using bootstrap’s collapse.

To Create accordion with arrows it takes following steps: –

1. Include the accordion html code in page.
2. Write a CSS for up and down arrow or (+)plus or (-)minus sing with transitions effect.

Sample

<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">Collapsible Group Item #1</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.
            </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">Collapsible Group Item #2 </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. 
            </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">Collapsible Group Item #3 </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. 
            </div>
        </div>
    </div>
</div>

CSS

.faqs {
    position: relative;
    width: 100%;
    height: 100%;
    background: #FFE001; 
    padding-bottom: 60px;  
    padding-top: 65px;  
    #faq .card {
        background: transparent;
        border-bottom: 1px solid #00A651;
        box-shadow: none;
    } 
    #faq .card .card-header {
        padding: 0;
        background: transparent;
        border-bottom: 0;
    }
      
    #faq .card .card-header .btn-header-link {
        color: #00A651;
        font-weight: 700;
        display: block;
        text-align: left;     
        padding: 15px 0;
        font-size: 18px;
    }
    
    #faq .card .card-header .btn-header-link:after {
        content: "\f107";
        font-family: 'Font Awesome 5 Free';
        font-weight: 900;
        float: right;
    }
    
    #faq .card .card-header .btn-header-link.collapsed {
        color: #00A651;
    }
    
    #faq .card .card-header .btn-header-link.collapsed:after {
        content: "\f106";
    }
    
    #faq .card .collapsing {
        line-height: 30px;
    }
    
    #faq .card .collapse {
        border: 0;
    }
    
    #faq .card .collapse.show {
        line-height: 30px;
        color: #222;
    }  
    
    #faq .card .card-body {
        font-weight: 300;
        font-size: 16px;
        line-height: 36px;
        color: #000000;
        padding-top: 0;
        padding-left: 0;
        padding-right: 100px;
    }
    .rightArr {
        font-weight: 500;
        font-size: 14px;
        line-height: 36px;
        text-transform: capitalize;
        color: #00A651;
        padding: 0;
    }
   

}

CSS

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

#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;
}

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

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

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

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

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

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

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

Another Example

HTML(<i class=”fa fa-plus”></i>)

<div class="accordion" id="accordionExample">
  <div class="card">
      <div class="card-header" id="headingOne">
          <h2 class="mb-0">
              <button type="button" class="btn btn-link" data-toggle="collapse" data-target="#collapseOne"><i class="fa fa-plus"></i> What is HTML?</button>
          </h2>
      </div>
      <div id="collapseOne" class="collapse" aria-labelledby="headingOne" data-parent="#accordionExample">
          <div class="card-body">
              <p>HTML stands for HyperText Markup Language. HTML is the standard markup language for describing the structure of web pages. <a href="https://www.tutorialrepublic.com/html-tutorial/" target="_blank">Learn more.</a></p>
          </div>
      </div>
  </div>
  <div class="card">
      <div class="card-header" id="headingTwo">
          <h2 class="mb-0">
              <button type="button" class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo"><i class="fa fa-plus"></i> What is Bootstrap?</button>
          </h2>
      </div>
      <div id="collapseTwo" class="collapse show" aria-labelledby="headingTwo" data-parent="#accordionExample">
          <div class="card-body">
              <p>Bootstrap is a sleek, intuitive, and powerful front-end framework for faster and easier web development. It is a collection of CSS and HTML conventions. <a href="https://www.tutorialrepublic.com/twitter-bootstrap-tutorial/" target="_blank">Learn more.</a></p>
          </div>
      </div>
  </div>
  <div class="card">
      <div class="card-header" id="headingThree">
          <h2 class="mb-0">
              <button type="button" class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree"><i class="fa fa-plus"></i> What is CSS?</button>
          </h2>
      </div>
      <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordionExample">
          <div class="card-body">
              <p>CSS stands for Cascading Style Sheet. CSS allows you to specify various style properties for a given HTML element such as colors, backgrounds, fonts etc. <a href="https://www.tutorialrepublic.com/css-tutorial/" target="_blank">Learn more.</a></p>
          </div>
      </div>
  </div>
</div>

JavaScript

<script>
$(document).ready(function(){
  // Add minus icon for collapse element which is open by default
  $(".collapse.show").each(function(){
    $(this).prev(".card-header").find(".fa").addClass("fa-minus").removeClass("fa-plus");
  });
  // Toggle plus minus icon on show hide of collapse element
  $(".collapse").on('show.bs.collapse', function(){
    $(this).prev(".card-header").find(".fa").removeClass("fa-plus").addClass("fa-minus");
  }).on('hide.bs.collapse', function(){
    $(this).prev(".card-header").find(".fa").removeClass("fa-minus").addClass("fa-plus");
  });
});
</script>

Bootstrap 4.3 accordion with arrows.

HTML

<div class="accordion" id="accordionExample">
  <div class="card">
    <div class="card-header" id="headingOne">
      <h2 class="mb-0">
        <button class="btn btn-link" type="button" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
          Collapsible Group Item #1
        </button>
      </h2>
    </div>

    <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" 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. 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="headingTwo">
      <h2 class="mb-0">
        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </button>
      </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. 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="headingThree">
      <h2 class="mb-0">
        <button class="btn btn-link collapsed" type="button" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
          Collapsible Group Item #3
        </button>
      </h2>
    </div>
    <div id="collapseThree" class="collapse" aria-labelledby="headingThree" 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. 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>

CSS

#accordionExample .accordionBtn:before,
#accordionExample .accordionBtn.collapsed:before{
    content: "\f067";
    font-family: "Font Awesome 5 Free";
    font-weight: 900;
    width: 25px;
    height: 25px;
    line-height: 28px;
    font-size: 14px;
    color: #50bbaa;
    text-align: center;
    position: absolute;
    top: 18px;
    right: 15px;
    transform: rotate(135deg);
    transition: all 0.3s ease 0s;
}
#accordionExample .accordionBtn.collapsed:before{
    color: #a0a0a0;
    transform: rotate(0);
}

Bootstrap example of Accordion with Open / Close Arrows using HTML, Javascript, jQuery, and CSS.  A very simple and lightweight Bootstrap 4 accordion with arrow up and down to toggle the contents. 

You can customize this code further as per your requirement.