body {
    margin: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: #f0f0f0;
}

img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain; /* Ou 'cover' */
    display: block;
}