html, body {
    height: 100%;
    overflow: hidden;
}

body {
    background-color: #111111;
    text-align: center;
    color: white;
    font-family: Arial;
}

body div {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    height: 100%;
}

img {
    width: 550px;
    max-width: 100%;
}