diff -r 004fdb42f063 -r a45f7dac4789 src_js/iconolab-bundle/src/components/editor/AnnotationForm.vue
--- a/src_js/iconolab-bundle/src/components/editor/AnnotationForm.vue	Thu Feb 23 11:50:57 2017 +0100
+++ b/src_js/iconolab-bundle/src/components/editor/AnnotationForm.vue	Thu Feb 23 11:52:20 2017 +0100
@@ -8,7 +8,7 @@
             <i class="fa fa-ban" v-if="!readonly"></i>
             <span v-if="!readonly">Annuler</span>
         </button>
-        <div v-if="!annotation" class="alert alert-warning">
+        <div v-if="!annotation" class="alert alert-warning text-center">
             Aucune annotation sélectionnée.
         </div>
         <form v-bind:action="formAction" method="post">