body {
    align-items: center;
    background-color: black;
    background-image: url('/static/background-tile.jpg');
    background-repeat: repeat;
    display: flex;
    justify-content: center;
    margin: 0;
    min-height: 100vh;
}

img {
    max-height: 100vh;
    max-width: 100vw;
}