.content {
    text-align: justify;
}

.right {
    display: block;
    margin-left: 1%;
    margin-right: 1%;
    float: right;
}

.center {
    display: block;
    margin-left: auto;
    margin-right: auto;
}

.left {
    display: block;
    margin-left: 1%;
    margin-right: 1%;
    float: left;
}

.headerlink {
    display: none;
}

*:hover > .headerlink {
    display: inline;
    margin-left: 0.5em;
}

div.toc span.toctitle {
    font-size: 1.5em;
    font-weight: bold;
}

div.toc > ul {
    margin-left: 3em;
}

div.toc ul ul {
    display: none;
}

pre > code {
    border: 0px;
}