body, html {
    height: 100%;
    margin: 0;
    padding: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #181a1b;
}

img {
    display: block;
    margin: auto;
    max-width: 100%;
    max-height: 100vh;
    height: auto;
    -webkit-mask-image: radial-gradient(circle, black 20%, transparent 100%);
    mask-image: radial-gradient(circle, black 20%, transparent 100%);
}