<!-- Button trigger modal -->

<button type="button" class="btn btn-primary" data-mdb-toggle="modal" data-mdb-target="#exampleModal">

  Launch demo modal

</button>

​

<!-- Modal -->

<div class="modal fade" id="exampleModal" tabindex="-1" aria-labelledby="exampleModalLabel" aria-hidden="true">

  <div class="modal-dialog modal-dialog-scrollable">

    <div class="modal-content">

      <div class="modal-header">

        <h5 class="modal-title" id="exampleModalLabel">Modal title</h5>

        <button type="button" class="btn-close" data-mdb-dismiss="modal" aria-label="Close"></button>

      </div>

      <form>

        <div class="modal-body">

          <select class="select" data-mdb-container="#exampleModal">

            <option value="1">One</option>

            <option value="2">Two</option>

            <option value="3">Three</option>

            <option value="4">Four</option>

            <option value="5">Five</option>

            <option value="6">Six</option>

            <option value="7">Seven</option>

            <option value="8">Eight</option>

            <option value="9">Nine</option>

            <option value="10">Ten</option>

          </select>

        </div>

        <div class="modal-footer">

          <button type="button" class="btn btn-secondary" data-mdb-dismiss="modal">

            Close

          </button>

          <button type="submit" class="btn btn-primary">Save changes</button>

        </div>

      </form>

    </div>

  </div>

</div>