Assume we have a simple layout with two columns. We want the columns to be split 25%/75% for small devices,For small devices we will use the .col-sm-* classes,We will add the following classes to our two columns,For a 33.3%/66.6% split, you would use .col-sm-4 and .col-sm-8 (and for a 50%/50% split, you would use .col-sm-6 and .col-sm-6),In the previous chapter, we presented a grid example with classes for small devices. We used two divs (columns) and we gave them a 25%/75% split:
