Modal windows Chronoforms v5

For my chonoforms 4 forms I use Modal popups with custom containers.

Start code:

<div class="modal hide" id="klachten-hoofd">
  <div class="modal-header">
    <button type="button" class="close" data-dismiss="modal">×</button>
    <h3>Hoofd</h3>
  </div>
  <div class="modal-body">
    <p>

End code:

</p>
  </div>
  <div class="modal-footer">
    <a href="#" class="btn" data-dismiss="modal">Sluiten</a>
  </div>
</div>

With chonoforms 5 this only works if I don't use the Bootstap3 form theme.

Any Idea how to change it so it will work with the bootstrap3 theme?

Rob

I got it working.

The modal popups used partly the chronoforms bootstrap css and partly the joomla bootstrap css.
With all the relevant (modified) css in an external file everything works.

Rob