<div align="center" class="content2" style="display:none;">
                    <button type="button" class="btn btn-info btn-lg" data-toggle="modal" data-target="#myModal">Get Reward!</button>
                    </div>
<!-- Modal -->
<div id="myModal" class="modal fade" role="dialog">
  <div class="modal-dialog">

    <!-- Modal content-->
    <div class="modal-content">
      <div class="modal-header">
        <button type="button" class="close" data-dismiss="modal">&times;</button>
        <h4 class="modal-title">Tu texto</h4>
      </div>
      Codigo que quieras poner ( publicidad, imagen lo que quieras)
        <div>
        <ins class="bmadblock-55e450ccc86fbae342567dec" style="display:inline-block;width:300px;height:250px;"></ins>
        </div>
        <input type="submit" class="btn btn-primary btn-lg" value="Get reward!" align="center">
      </div>
      <div class="modal-footer">
        <button type="button" class="btn btn-default" data-dismiss="modal">Close</button>
      </div>
    </div>

  </div>
</div>
                    </form>