#gauche {
  float:left;  
  width:295px;
  margin-top:20px;
  margin-bottom:20px;
}
#gauche p {
  border:1px solid #000000;
  border-left:0px;
  text-align:right;
  font-size:23px;
  height:52px;
  line-height:54px;
  background-color:#FFFFFF;
  vertical-align:middle;
} 
#gauche p img {
  position:relative;
}

#flash {
  float:left;
  width:400px;
  height:230px;
}
#droite {
  float:right;
  width:295px;
  margin-top:20px;
  margin-bottom:20px;
}
#droite p {
  border:1px solid #000000;
  border-right:0px;
  text-align:left;
  font-size:23px;
  background-color:#FFFFFF;
}