<div class="grid grid--rev">
    <div class="grid__item sm-w-1/2">
        <div class="box box--default box--tiny text-center">First column</div>
    </div>
    <div class="grid__item sm-w-1/2 xs-mrgt">
        <div class="box box--default box--tiny text-center">Second column</div>
    </div>
</div>
        
    
Reverse the columns order when they aren’t stacked. Useful to display something at the top on small screens but on the right on large screens.