body
{
   width: 100%;
   height: 100%;
   margin: 0px; 
   margin-top: 0px; 
   margin-bottom: 0px;
   overflow : hidden;
}

#en_tete
{
position : absolute;
   top : 0px;
   left : 0px;
   width: 100%;
   height: 7%;
   margin-top: 0px;
   margin-bottom: 0px;
   border-style : ridge;
   overflow : hidden;
  
}

#principal
{
position : absolute;
   top: 7%;
   left : 0px;
   width: 100%;
   height: 85%;
   margin-top: 0px;
   margin-bottom: 0px;
   background-color : #c0c000;
   border-style : ridge;
   overflow : hidden;
   
}


#pieddepage
{
position : absolute;
   top: 92%;
   left : 0px;
   width: 100%;
   height: 8%;
   margin-top: 0px;
   margin-bottom: 0px;
   background-color : #c0c000;
   border-style : ridge;
   overflow : hidden;
 }