diff -r 541cd2de37d8 -r bd4d4d4dbdaa src/hdalab/templates/video_popup.html
--- a/src/hdalab/templates/video_popup.html	Tue Apr 05 19:52:17 2016 +0200
+++ b/src/hdalab/templates/video_popup.html	Wed Apr 06 12:13:05 2016 +0200
@@ -3,7 +3,7 @@
 {%  trans 'Fermer ce didacticiel'  as close_msg %}
 <a class="video-close" href="#">{{ close_msg | linebreaksbr }}</a>
 <div class="slideShowTitle">{% trans 'Tutoriel vidéo : Renkan' %}</div>
-<video id="renkan_video" class="video-js vjs-default-skin renkan_video_popup"
+<video id="renkan_video" class="video-js vjs-default-skin renkan_video_popup vjs-big-play-centered"
         controls preload="auto" width="800" height="450"
         poster="{% static 'hdalab/img/renkan_tutorial_video_poster.png' %}"
         data-setup=''>