pre {
    background-color: #fffadd;
    border: 1px black dashed;
    padding: 25px;
    margin: 5px;
    width: 52em;
}

.slim pre {
    width: 24em;
}

.notsoslim pre {
    width: 38em;
}

.slim pre, .wide pre, .notsoslim pre {
    margin: 20px 0px 30px 0px;
}