.cell-empty {  width: 5em; height: 4em}
.cell-non-empty {  width: 5em; height: 4em}
.cell-selected {  width: 5em; height: 4em}

.calendar {  border-collapse: collapse}
.year {  text-align: center; font-weight: bold}
.month {  text-align: center; font-weight: bold}
.weekday {  text-align: center; font-weight: bold}