Hi thanks,
the quickest fix seems to be adding the jevbootstrap class to the line
<div style="clear:both" class="jeventslight">
so you get
<div style="clear:both" class="jeventslight jevbootstrap">
unfortunatly it isn't possible to make an override within joomla for this part and adding it into the core file would mean it would be overwritten when doing an update.. or you should add it to the core view.html.php file as it probably will solve this issue for other templates as well