body {
  background-color: #292929;
  color: #fff4e8;
  display: flex;
  justify-content: space-around;
  align-items: center;
  height: 100vh;

}

#conteneur{
  width: 50vw;
  z-index: 3;
  /*border: 1px solid red;*/
    background-color: rgba(0, 0, 0, 0.8);
    padding-top: 40px;
}

h1 {
  font-size: 10vw;
  font-family: Impact;
  text-align: center;
  /*border: 1px solid red;*/
}


nav{
  /*border: 1px solid red;*/
  width: 60%;
  margin: 40px auto;
  height: 30px;
  padding: 10px;
  background-color: #fff4e8;
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: space-around;
}

nav a{
  font-family: sans-serif;
  text-align: center;
  color: #292929;
  font-size: 1.5em;
  text-decoration: none;
}

figure{
  z-index: 2;
  height: 100vh;
  width: 100vw;
  position: fixed;
  top: 0px;
  left: 0px;
}

figure img{
  width: 100%;
  object-fit: contain;
}