body {
    margin-left: 10%;
    margin-right: 10%
    }
h1, h2, h3 {
    text-align: center
    }
hr {
    width: 65%
    }
hr.full {
    width: 100%
    }
ul.TOC {
    list-style-type: none;
    margin-top: 0.5em;
    margin-bottom: 1em
    }
span.backlink {
    font-size: small
    }