div#content-top-column {
    width: 100%;
    margin: 10px 0 20px 0;
}

div#content-first-column {
    width: 225px;
    margin: 0 0 0 13px;
}

div#content-second-column {
    width: 225px;
    margin: 0 0 0 20px;
}

div#content-third-column {
    width: 225px;
    margin: 0 0 0 20px;
}

div#content-fourth-column {
    width: 225px;
    margin: 0 13px 0 20px;
}