ingThree"
                         data-parent="#accordionExample">
                        <div class="card-body">
                            {{ data.solution }}
                        </div>
                    </div>
                </div>
                <div class="card m-b-0 border-top">
                    <div class="card-header" id="headingFour">
                        <h5 class="mb-0">
                            <a class="collapsed" data-toggle="collapse" data-target="#collapseFour"
          