Hello Ciaran,
in http://www.cavanmonaghansciencefestival.ie/index.php/co-cavan-events/176-exploring-careers-in-steam-for-parents-and-students
and all articles the Sidecol B is being over lapped by the article primary image... as I have added a sidecol a..... do I need to resize the images or is there a way that joomla can resize the images? .... do you know how I would fix this?