bootstrap 3 nested columns bootstrap nested columns example twitter bootstrap 3 nested grid bootstrap 3 nested grid example bootstrap nested grid system nesting bootstrap columns bootstrap half column width nesting columns bootstrap 3 twitter bootstrap 3 nested rows bootstrap grid nested rows bootstrap grid system nested bootstrap divide column bootstrap split column In this video we will discuss nested rows and columns in Bootstrap Bootstrap supports nested rows and columns. This means rows and columns can be placed inside an existing column. The formula for the the nested row is also the same, i.e the columns in the nested row should add up to 12 or fewer. However, please note that it is not required that you use all 12 available columns.