Add Bootstrap columns to your widget areas. This widget gives a Title, an optional Icon and a Textarea along with column widths at the four Bootstrap break points.
Any developer familiar with Bootstrap v3 will find this easy to use. If you have no previous experience with Bootstrap v3, please consult the documentation http://getbootstrap.com/css/#grid
Icons are from the Font Awesome set. Choose an icon from the set http://fontawesome.io/3.2.1/icons/
Just input the icon value withour icon-. For example, for the tick (icon-check), input check.
row added to the widget area wrapper element For example, if you have registered the sidebar-triptych:
<?php if ( is_active_sidebar( 'sidebar-triptych' ) ) : ?>
<div class="row">
<?php dynamic_sidebar( 'sidebar-triptych' ); ?>
</div>
<?php endif; ?>