<link href="//netdna.bootstrapcdn.com/bootstrap/3.2.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//netdna.bootstrapcdn.com/bootstrap/3.2.0/js/bootstrap.min.js"></script>
<script src="//code.jquery.com/jquery-1.11.1.min.js"></script>
<div class="container-fluid">
<div class="row">
<ul class="nav nav-tabs" role="tablist">
<li role="presentation" class="active"><a href="#aussteller" role="tab" data-toggle="tab">Aussteller</a></li>
<li role="presentation"><a href="#calender" role="tab" data-toggle="tab">Kalender</a></li>
</ul>
<div class="tab-content" id="meta-tab">
<div class="tab-pane fade" id="calender">
<ul class="list-group">
<li class="list-group-item">text01</li>
<li class="list-group-item">text02</li>
<li class="list-group-item">text03</li>
<li class="list-group-item">text04</li>
<li class="list-group-item">text05</li>
</ul>
</div>
<div class="tab-pane fade in active" id="aussteller"><div class="col-lg-6 col-sm-6 col-md-6">
<div class="tab-content">
<div role="tabpanel" class="tab-pane fade in active" id="home">
<div class="panel">
<div class="panel-body">
<div class="row">
<img src="http://placehold.it/400x200/000.png" alt="" class="img-responsive">
</div>
<div class="row text-justify">
<h3>Tab1</h3>
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</div>
<div class="row">
<img src="http://placehold.it/400x200/000.png" alt="" class="img-responsive">