h1 {
  font-family: "Segoe Print";
  font-size: 30px; font-weight: 700;
  color: white;
  margin:0px;
  margin-bottom: 30px;
  text-align: center;
}
h2 {
  text-align: center;
  font-weight: 700;
  font-size: 25px;
  margin-top: 0px;}

/* page index */
#titre {
  clear: both;
  position: relative;
  font-size: 70px; font-weight: 900;
  text-align: center; color: white;
}
#h1index {
  position: relative;
  float: left; left: 10%;
  margin-top: 120px;
}
#logo {
  position: relative;
  float: right;
  width: 180px;
  right: 10%;
  margin-top: 100px;
}
#ltitre {
  position: relative;
  float: left;
}
#avantages {
  position: relative; float: left;
  width: 400px; margin-left: 50px;
  color:  white;
}
#avantages li { margin-top: 10px;}
#impact {
  position: relative; float: left;
  width: 400px; margin-left: 50px;
  color:  white;
}
#impact li { margin-top: 10px;}

#tocreate {
  position: absolute;
  width: 500px; left: 50%;
  margin-left: -250px;
  font-weight: 900;
  text-align: center;
  color: white;
  display: none;
}