*{
    padding: 0;
    margin: 0;
  }
#mySlider{
  width: 100%;
  overflow: hidden;
}
/* .figure{
  position: relative;
  left: 0px;
} */

#mySlide{
  position: relative;
  width: 100%;
  float: left;
}
.titre_principal{
  position: absolute;
  font-size: 3em;
  width: 100%;
  text-align: center;
  color: white;
  top: 10%;
  text-shadow: 1px 1px 2px rgba(0, 0, 0.3);
}