html {
    background: #181818;
    color: #808080;
}

body {
    margin: 4rem;
}

a {
    color: sandybrown;
}

body > section {
    padding: 1rem;
    background: #202020;
    border-left: 1rem solid #282828;
    margin-left: -1rem;
}

.flow > * {
    margin-block: 0;
}

.flow > * + * {
    margin-block-start: 1em;
}