body
{
    margin: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: url('../img/kongelateur.jpg');
    /* Image : https://kismile.com/products/chest-freezer?variant=43142475219197 */
    /* Il n'y a pas d'affiliation commerciale, j'avais juste besoin d'une image d'un congélateur. */
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    font-size: 2em;
    font-family: sans-serif;
    text-align: center;
}

a
{
    text-decoration: none;
    color: initial;
    font-size: medium;
}