svg {
    display: block;
    margin: auto;
    text-align: center;
    transform-origin: center;
}
.svg {
    position: relative;
    overflow: hidden;
    text-align: center;
    cursor:grab;
    /* the image fit to the screen but keep its ratio and don't crop */
}

#carte {
    height: 100vh;
    width: 100vw;
    max-height: 100vh;
}

/* Style pour les boutons zoom + et - */
.zoom {
    position: absolute;
    top: 0;
    left: 0;
    padding: 10px;
    z-index: 100;
}
.zoom button {
    display: block;
    width: 30px;
    height: 30px;
    margin: 5px;
    border: none;
    background-color: #fff;
    color: #000;
    font-size: 1.5em;
    cursor: pointer;
}
.zoom button:hover {
    background-color: lightblue;
    color: #fff;
}
.zoom button:active {
    background-color: lightblue;
    color: #fff;
}