Bootstrap 2: Columns under 768px
Set of extra CSS rules to create columns under 768px using bootstrap 2
Extracted from: http://stackoverflow.com/questions/14419513/twitter-bootstrap-how-to-not-scale-columns-to-single-row-under-767px
Thanks to justinavery
###Required HTML structure
<div class="span4 mobile-one">...</div>
<div class="span8 mobile-three">...</div>
or
<div class="span6 mobile-two">...</div>
<div class="span6 mobile-two">...</div>