<!-- 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">
    <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>
      <div class="modal-body">...</div>
      <div class="modal-footer">
        <button type="button" class="btn btn-secondary" data-mdb-dismiss="modal">
          Close
        </button>
        <button type="button" class="btn btn-primary">
          Save changes
        </button>
      </div>
    </div>
  </div>
</div>