body {
    font-size: 0.9em;
    font-family: verdana, arial, sans-serif;
    background-color: #000;
    margin: auto;
}

.htmleaf-header {
    padding: 2em 190px 1em;
    text-align: center;
}

.htmleaf-demo {
    width: 100%;
}

.htmleaf-demo a {
    color: #fff;
    background: #444;
    text-decoration: none;
    display: inline-block;
    padding: 0.6em 1em;
    border: 1px solid #fff;
    border-radius: 12px;
    font-weight: 200;
}

.htmleaf-demo a:hover {
    opacity: 0.6;
}

.htmleaf-demo a.current {
    background: #000;
    color: #fff;
}