html, body {
    margin: 0;
    padding: 0;
    height: 100%;
    overflow-x: hidden;
}

main {
    font-family: IBM Plex Mono,monospace,sans-serif;
    margin: 0 auto;
    padding: 0 20px 20px;
    max-width: 800px;
}

main ul, main p {
    z-index: 1;
    position: relative;
}