Info! Just an example of tabs usage
<div class="span12"></div> to force 100% width. By default every block has 100% width.
<div class="span6"></div>
<div class="span6"></div>
<div class="span4"></div>
<div class="span4"></div>
<div class="span4"></div>
<div class="span3"></div>
<div class="span3"></div>
<div class="span3"></div>
<div class="span3"></div>