div.source {
    border: 1px dashed black;
    background-color: silver;
    color: black;
    float: right;
    clear: right;
    position: relative;
    width: 60%;
}

div.source pre {
    margin: 0.2em 0;
    float: left;
}

div.source div.screenshot {
    float: right;
}

div.source div.caption {
    text-align: center;
    clear: both;
}

span.input { font-weight: bold; }