<ul class="nav nav-tabs">
<li class="active"><a href="#A" data-toggle="tab">Section 1</a></li>
<li><a href="#B" data-toggle="tab">Section 2</a></li>
<ul class="nav nav-tabs">
<li class="active"><a href="#A" data-toggle="tab">Section 1</a></li>
<li><a href="#B" data-toggle="tab">Section 2</a></li>