html, body {
    height: 100%;
    width: 100%;
}

html {
    font-size: 87.5%;
}

#openseadragon-container {
    width: 100%;
    height: 100%;
    position: relative;
    background-color: black;
}

#iiif-container {
    margin: 0 auto 1rem;
    max-width: 600px;
    position: absolute;
    top: 1rem;
    left: 0;
    right: 0;
    z-index: 1000;
    display: none;
}