body {
    font-family: Libertinus Serif, serif;
    min-height: 100vh;
    margin: 0;

    display: grid;
    grid-template-rows: auto 1fr auto;
}

header {
    margin: 0.5em;
}

footer {
    margin: 0.5em;
    text-align: center;
}

#render-container {
    display: flex;
    justify-content: center
}