Я хочу показать первый элемент этого складного аккордеона. Я провел некоторое исследование в Интернете, но напрасно
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<div class="accordion" id="accordion2">
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseOne" >
Aller au dossier personnel d'un agent
</a>
</div>
<div id="collapseOne" class="accordion-body collapse" style="height: 0px; ">
<div class="accordion-inner">
<form action="goToAgent.do" method="post">
<p align="center">
<input type="hidden" value="identite" name="retour">
<label for="nomPrenom" >
Entrer le nom complet de l'agent:
</label>
<input type="text" name="nomPrenom" class="typeahead" /> <br>
<input type="submit" value="appliquer" class="btn btn-info" />
</form>
</div>
</div>
</div>
<div class="accordion-group">
<div class="accordion-heading">
<a class="accordion-toggle" data-toggle="collapse" data-parent="#accordion2" href="#collapseTwo">
Ajout d'un nouveau fonctionnaire
</a>
</div>
<div id="collapseTwo" class="accordion-body collapse">
<div class="accordion-inner">
<!-- lorem -->
</div>
</div>
</div>
</div>