dl.ArchiveIndex {
    margin: 20px 10px 0 10px;
    padding: 0;
    width: 780px;
}

.ArchiveIndex dt, .ArchiveIndex dd {
    margin: 0;
    padding: 2px 0;
    border-bottom: 1px dotted #ccc;
}

.ArchiveIndex dt {
    float: left;
    width: 500px;
}

.ArchiveIndex dd {
    float: right;
    width: 280px;
    text-align: right;
}