Hey Rowan, I wish there was an easy way to do this. You can write up some javascript to dynamically calculate the height of the row and make the column’s class have that same height (subtract padding or whatnot), or you can just set an pixel height to make them all the same height.
One solution uses javascript, one uses CSS3. Neither is “ideal”, but both will work. As far as making it responsive - as long as the content doesn’t change you can remove the height for smaller devices and it will stack normally.