div.flexi2_colonne_gauche
{
margin:1em;
padding:1em;
float:left;
width:25%;
z-index:2;
}

div.flexi2_colonne_droite
{
background-image: url(../images/fond_horizontale.gif);
background-repeat: no-repeat;
background-position:top left;
margin:1em;
margin-left:30%;
padding:0em 2em;
z-index:2;
min-height:50em;

}