p.author {
    font-style: italic;
    margin: 0;
}

p.date {
    font-size: smaller;
    margin: 0;
}

pre.script {
    /* background-color: #DDD */
    border: 1px solid #555;
}

span.comment {
    color: green;
}

span.code {
    font-family: mono;
}

div.output {
    background-color: #555;
    color: white;
}

div.warning {
    background-color: #555;
    color: lightgreen;
}

div.error {
    background-color: #555;
    color: yellow;
}