body {
        background-image: url("../images/fond.webp");
        background-size: cover;
        background-attachment: fixed;
      }
      @font-face {
        font-family: "Marhey";
        src: url("../fonts/Marhey-Bold.ttf") format("truetype");
      }
      #titre {
        display: flex;
        justify-content: center;
        margin-top: 20px;
        margin-bottom: 20px;
        font-family: "Marhey";
        font-size: 2em;
        color: gold;
        text-shadow: rgba(0, 0, 0, 5) 10px 15px 20px;
      }
      #container {
        margin-left: auto;
        margin-right: auto;
        box-shadow: 0px 0px 30px #bbb;
        position: relative;
        border: 1px solid red;
        width: 60%;
      }
      #container img {
        width: 100%;
      }
      #fleche-gauche,
      #fleche-droite {
        width: 60px;
        position: absolute;
        top: 45%;
        opacity: 0.5;
        cursor: pointer;
      }
      #fleche-gauche:hover,
      #fleche-droite:hover {
        opacity: 1;
      }
      #fleche-gauche {
        left: 10%;
      }
      #fleche-droite {
        right: 10%;
      }
      #retour{margin-left:40px ;}