<div class="container">
    <div class="row">
      <div class="panel panel-blue">
        <div class="panel-heading panel-collapsed">
          <span class="panel-title">Panel blau</span>
          <span class="pull-right clickable">
            <i class="fa fa-angle-down"></i>
          </span>
        </div>
        <div class="panel-body" style="display: none;">
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          eli
        </div>
      </div>
    </div>
  </div>
  

  <div class="container">
    <div class="row">
      <div class="panel panel-green">
        <div class="panel-heading panel-collapsed">
          <span class="panel-title">Panel grün</span>
          <span class="pull-right clickable">
            <i class="fa fa-angle-down"></i>
          </span>
        </div>
        <div class="panel-body" style="display: none;">
          Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna
          aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
          gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing
          eli
        </div>
      </div>
    </div>
  </div>
  

  <div class="container">
    <div class="row">
      <div class="panel panel-gray">
        <div class="panel-heading panel-collapsed">
          <span class="panel-title">Panel grau</span>
          <span class="pull-right clickable">
            <i class="fa fa-angle-down"></i>
          </span>
        </div>
        <div class="panel-body" style="display: none;">
          Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna
          aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd
          gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing
          eli
        </div>
      </div>
    </div>
  </div>