body{
    margin: 0;
    padding: 0;

}

#plan-1{
    height: 150vh;
    width: 150vw;

    position: fixed;
    overflow: hidden;
    object-fit: cover;
    z-index: -10;

}

#chemin{
    position: absolute;
    top: 25rem;
    left: 75rem;
    background-color: rgba(255, 0, 0, 0);
    width: 11rem;
    height: 12rem;
    z-index: 10;
}