body{
  margin: 0;
  padding: 0;
}
.image{
        width:100%;
        margin:0%;
}
.bouton{
  position: absolute;
  left:40vw;
  top: 29vw;
  width: 20vw;
  height: 5vw;
  background-color: red;
  opacity: 0;
}
.bouton2{
  position: absolute;
  left:5vw;
  top: 100vw;
  width: 20vw;
  height: 5vw;
  background-color: red;
  opacity: 0;
}