style.css

body {
    margin: 1em;
}

h1, h2, h3 {
    margin-top: 1em;
}

pre {
    margin: 0.5em 2em;
    padding: 0.5em;
    background-color: #eee;
    border: 1px solid #ddd;
}

table {
    margin-left: 1em;
    background-color: lightgray;
}

td, th {
    padding: 0.3em;
}

td {
    background-color: white;
}