Please have a look at http://www.bootply.com/133473.
I have at least a couple of problems and I didn't find any solution up to now...
First problem: The leaflet map is 0px height and the next row is not in the correct position.
Second problem (but maybe it is related to the first one): On a small device the width of the map is the full width but I'd like to have a margin and I wasn't able to get it (I tried but margin-left, margin-right and padding-left, padding-right...) and of course the text row is superimposed to the map and that's not what I want...