The calendar plugin that is installed by default in Serendipity shows all entries for the month with links to the archive page for that day. This makes it so easy to find posts for particular days. Some theme designers are also adding extra coloring, borders, or background images to calendars to make them really stand out. It is even possible to add events or personal activities to the calendar by installing extra plugins.
' and sits within a table to create the columns and rows.
The following styles can be aplied to modify your calendar;
.serendipity_calendar, style for entire calendar table
table.serendipity_calendar td, styles for calendar rows
table.serendipity_calendar a, style for all links within a calendar row
table.serendipity_calendar a:hover, style for all hovered over links within a calendar row
td.serendipity_weekDayName, style for the dayname (mon, tue,etc)
td.serendipity_calendarHeader a:link, style for the month name link
td.serendipity_calendarHeader a:visited, style for visited months
td.serendipity_calendarHeader a:hover, style for hovered over months
.serendipity_calendarDay, style for the dates
td.Today, style for today's date
td.FirstInRow, style for the first box on a row, if your week starts on a Sunday you could style this separately
td.LastInRow, style for the last box on a row, if your week ends on a Sunday you could style this separately