.bootstrap-datetimepicker-widget table td span {
    width: 1em;
    height: 1em;
    line-height: 1em;
}
.bootstrap-datetimepicker-widget table td {
    height: 1em;
    line-height: 3em;
    width: 1em;
}
.bootstrap-datetimepicker-widget.dropdown-menu{
    width: 12em;
}