如何解决：Bootstrap4 (Accordion) 不工作？

Question

<div id="accordion">
                    <div class="card">
                        <div class="card-header" role="tab" id="peterhead">
                            <h3 class="mb-0">
                                <a data-toggle="collapse" data-target="#peter">Peter Pan <small>Chief Epicurious Officer</small></a>
                            </h3>
                        </div>
                        <div class="collapse show" id="peter" data-parent="#accordian">
                            <div class="card-body">
                                <p class="d-none d-sm-block">......</p>
                            </div>
                        </div>
                    </div>
                    
                    <div class="card">
                        <div class="card-header" role="tab" id="dannyhead">
                            <h3 class="mb-0">
                                <a class="collapsed" data-toggle="collapse" data-target="#danny">Dhanasekaran Witherspoon <small>Chief Food Officer</small>
                                </a>
                            </h3>
                        </div>
                        <div class="collapse" id="danny" data-parent="#accordion">
                            <div class="card-body">
                                <p class="d-none d-sm-block">......</p>
                            </div>
                        </div>
                    </div>

                    <div class="card">
                        <div class="card-header" role="tab" id="agumbehead">
                            <h3 class="mb-0">
                                <a class="collapsed" data-toggle="collapse" data-target="#agumbe">Agumbe Tang <small>Chief Taste Officer</small>
                                </a>
                            </h3>
                        </div>
                        <div class="collapse" id="agumbe" data-parent="#accordion">
                            <div class="card-body">
                                <p class="d-none d-sm-block">.......</p>
                            </div>
                        </div>
                    </div>

引导程序（手风琴）不工作

点击名字后card-body打不开...请帮帮我

第一个卡片标题正在显示，其余的卡片标题已折叠，但这不是问题...我在点击时遇到的问题 card-header，在我点击 card-header 后，card-body 没有打开

Answer 1

请将此手风琴示例作为指导。

参考：Bootstrap Documentation

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">

<div id="accordion">
  <div class="card">
    <div class="card-header" id="headingOne">
      <h5 class="mb-0">
        <button class="btn btn-link" data-toggle="collapse" data-target="#collapseOne" aria-expanded="true" aria-controls="collapseOne">
          Collapsible Group Item #1
        </button>
      </h5>
    </div>

    <div id="collapseOne" class="collapse show" aria-labelledby="headingOne" data-parent="#accordion">
      <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">
      <h5 class="mb-0">
        <button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseTwo" aria-expanded="false" aria-controls="collapseTwo">
          Collapsible Group Item #2
        </button>
      </h5>
    </div>
    <div id="collapseTwo" class="collapse" aria-labelledby="headingTwo" data-parent="#accordion">
      <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">
      <h5 class="mb-0">
        <button class="btn btn-link collapsed" data-toggle="collapse" data-target="#collapseThree" aria-expanded="false" aria-controls="collapseThree">
          Collapsible Group Item #3
        </button>
      </h5>
    </div>
    <div id="collapseThree" class="collapse" aria-labelledby="headingThree" data-parent="#accordion">
      <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>
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