Bouton d'ajout :
<button class="btn btn-success btn-add">Nouveau client</button>
Bouton de modification :
<button type="button" class="btn btn-primary btn-action"> <i class="fa fa-pencil"></i></button>
Bouton de suppression :
<button type="button" class="btn btn-danger btn-action"> <i class="fa fa-trash"></i></button>
