h1 {
  height: 15px;
  color: #FFFF00; 
}

h3 {
  height: 15px;
  color: #FFF000; 
}

p {
   font-size: 15px;
   color: white;
}

div {
   background-color: #F0F0F0;
   text-align: center;
   font-size: 20px;
   /*border: 2px inset gold;*/
   /*width: 1200px; */
}   

#header {
  border-style: none solid white; /*ridge ridge;*/
  text-align: center;
  background-image: url("bandeau_1200_100.png");
  background-position: center; 
  background-repeat: no-repeat;       
  /*width: 1000px; */
  height: 100px;  
}
.calendar {
  width: 210px; 
  margin-left: 20px; 
  margin-right: 20px; 
  margin-top: 20px; 
}
.graphique {
  position: absolute;
  top: 110px;
  left: 240px;
  width: 750px; 
  height: 400px; 
  /*border: 2px solid gray; */
  margin-top : 10px;
  padding: 20px;
  margin-left: 10px; 
}