Responsive border styles module for Basscss
Add breakpoint-conditional borders with these border utilities.
<div class="p1 m1 sm-border-left">Left border on sm breakpoint and up</div>
<div class="p1 m1 md-border-left">Left border on md breakpoint and up</div>
<div class="p1 m1 lg-border-left">Left border on lg breakpoint and up</div>