#conteneur{
 text-align:center;
 xidth:100%;
}
.accessibilite{
 position:absolute;
 left:-1000px;
}

#page_video{
 position:relative;
 width: 756px;
 height: 498px;
 background: transparent url(../images/episode.jpg) no-repeat;
}

#cadre_video{
 position: absolute;
 left: 235px;
 top:100px;
}

#bt_retour_video{
 position: absolute;
 left: 676px;
 top:0px;
}