<section class="panel panel-default">
<header class="panel-heading">
<h2 class="panel-title">[Panel title]</h2>
<li class="active"><a href="#tab1" data-toggle="tab">Den første lange 1</a></li>
<li><a href="#tab2" data-toggle="tab">Ekstra lang fane 2</a></li>
<li><a href="#tab3" data-toggle="tab">En tredje og meget lang fane 3</a></li>
<div class="tab-content">
<div class="tab-pane fade active in" id="tab1">
<div class="tab-pane fade" id="tab2">
<div class="tab-pane fade" id="tab3">