The grid system that starts out stacked and becomes horizontal at the small breakpoint (sm)
<div class="container">
<div class="row">
<div class="col-sm">col-sm</div>
<div class="col-sm">col-sm</div>
<div class="col-sm">col-sm</div>
</div>
</div> by Valeri Tandilashvili
4 years ago