KSS Style Guide

Examples
Default styling
A div
.bwa-4
Sets all borders to 4
A div
.bwx-4
Sets left and right borders to 4
A div
.bwy-4
Sets top and bottom borders to 4
A div
.bwt-4
Sets top border to 4
A div
.bwr-4
Sets right border to 4
A div
.bwb-4
Sets bottom border to 4
A div
.bwl-4
Sets left border to 4
A div
Markup
<div class="[modifier class]">A div</div>
Source: dist/full/full.css, line 242