body {
    max-width: 40em;
    margin: 0 auto;
    padding: 5px;
    font-family: Georgia, serif;
    font-size: 18px;
    line-height: 1.6em;
    color: black;
}
h1, h2, h3 {
    font-family: sans-serif;
    font-weight: normal;
}