body {
    color: #111;
    background: #fff;
    line-height: 1.5;
    font-size: 1rem;
    font-family: Arial, Helvetica, sans-serif;
    margin: 0;
}

/* text based browsers */
hr {
    display: none;
}

a {
    color: #00f;
}

h1, h2, h3 {
    font-weight: normal;
    border-bottom: 1px solid #e9ecef;
    padding-bottom: .25rem;
}

header {
    background: #ddf;
    border-bottom: 1px solid #aaa;
}
header > nav {
    padding: 0.75rem;
    margin: auto;
    max-width: 37rem;
}

main {
    padding: 0 0.75rem 0 0.75rem;
    margin: auto;
    max-width: 37rem;
}

img {
    display: block;
    height: auto;
    max-width: 100%;
}

table {
    display: block;
    border-collapse: collapse;
    overflow: auto;
}
tbody {
    display: table;
    width: 100%;
}
td, th {
    text-align: left;
    padding: .5rem;
}
tr {
    border-bottom: 1px solid #aaa;
}
tr:nth-child(even) {
    background: #eee;
}

pre, code {
    font-family: "DejaVu Sans Mono", Consolas, monospace;
    background: #eee;
    border: 1px solid #aaa;
    padding: .5rem;
    max-width: 100%;
    display: block;
    overflow-x: auto;
    overflow-y: hidden;
}

@media (prefers-color-scheme: dark) {
    html {
        filter: invert(1);
    }
}