<!-- Button trigger modal -->
<button type="button" class="btn btn-primary" data-toggle="modal" data-target=".bd-example-modal-sm">
Small modal
</button>
<!-- Modal -->
<div class="modal fade bd-example-modal-sm" tabindex="-1" role="dialog"
aria-labelledby="mySmallModalLabel" aria-hidden="true">
<div class="modal-dialog modal-sm">
<div class="modal-content">
...
</div>
</div>
</div>
