#slider_gpsc, #slide_autre_page{
  width: 100%;
  height: 408px;
  overflow: hidden;
  z-index: 0;
  margin-top: 205px;
}

#slide_autre_page{
  position: relative;
}

#contenair_slider_slider_gpsc{
  width: 100%;
  height: calc(408px * 4);
  animation-name: slider_gpsc;
  animation-duration: 17s;
  animation-direction: alternate;
  /*animation-direction: alternate-reverse;*/
  /*animation-delay: 3s;*/
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out cubic-bezier(0.1, 0.2, 1.2, 1.5);
  z-index: 0;
}

.content_slider_gpsc{
  z-index: 0;
}

.content_slider_gpsc img, #container_slider_autre_page img{
  display: block;
  width: 100%;
  height: 408px;
  z-index: 0;
}

#texte_slider_autre_page{
  position: absolute;
  top: 0px;
  left: 0px;
  bottom: 0px;
  right: 0px;
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-start;
  align-items: center;
  padding: 20px 40px;
}

#texte_slider_autre_page h1{
  font-size: 55px;
  text-shadow: 0px 5px 3px rgba(20, 20, 20, .7);
  width: 100%;
  color: #fff;
}

#texte_slider_autre_page h3{
  font-size: 35px;
  text-shadow: 0px 5px 3px rgba(20, 20, 20, .7);
  width: 100%;
  color: #fff;
}

@keyframes slider_gpsc{
  0%{transform: translateY(0px);}
  20%{transform: translateY(0px);}
  25%{transform: translateY(-408px);}
  45%{transform: translateY(-408px);}
  50%{transform: translateY(-816px);}
  70%{transform: translateY(-816px);}
  75%{transform: translateY(-1224px);}
  100%{transform: translateY(-1224px);}
}