Advent of Code CSS but actually good

style.css

* {
    box-sizing: border-box;
}

body {
    margin: 0 auto;
    padding: 1em 1.5em;
    min-height: 100vh;
    max-width: 800px;
    min-width: auto;
    font-family: monospace;
    font-weight: 400;
}

html {
    background: #0f0f23;
}

header {
    overflow: auto;
    padding-bottom: 0.5em;
    margin-bottom: 1.5em;
}

body > pre {
    color: white;
    font-size: 0.9em;
}

article {
    width: auto;
}

article h2 + * {
    white-space: break-spaces;
}

#sponsor {
    display: none;
}

#aoc-extension {
    position: absolute;
    width: 100%;
    left: 0;
    overflow: auto;
}

#aoc-extension-graphs > div {
    height: 40vh;
}