li#hierarchical-archives ul.years,
li#hierarchical-archives ul.months {
    display: inline;
    margin: 0em;
    list-style: none;
}

li#hierarchical-archives ul.years li,
li#hierarchical-archives ul.months li {
    display: inline;
}

li#hierarchical-archives span.year:after {
    content: ":";
}