* {
    margin: 0;
}
html, body {
    height: 100vh;
}
.resize_fit_center {
    max-width: 100%;
    max-height: 100%;
    bottom: 0;
    left: 0;
    margin: auto;
    overflow: auto;
    position: fixed;
    right: 0;
    top: 0;
    -o-object-fit: contain;
    object-fit: contain;
}
h1 {
    text-align: center;
}
#impressum {
    text-align: center;
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
}