<button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModalLong2">
    Click here
  </button>

  <div class="modal fade " id="exampleModalLong2" tabindex="-1" role="dialog" aria-labelledby="myLargeModalLabel" aria-hidden="false">
    <div class="modal-dialog modal-lg">
      <div class="modal-content">
        <div class="modal-header">
          <h5 class="modal-title">Modal title</h5>
          <button type="button" class="close" data-dismiss="modal" aria-label="Close">
            <span aria-hidden="true">×</span>
          </button>
        </div>
        <div class="modal-body">
          <p>Modal body text goes here.</p>
        </div>
        <div class="modal-footer">
          <button type="button" class="btn btn-primary">Save changes</button>
          <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button>
        </div>
      </div>
    </div>
  </div>