The td element defines a single cell of a table row. It is the wrapper for any text or other elements that comprise the cell.
The "td" semantax is implied when it appears as an immediate descendent of a "tr" element. You can omit the semantax in these cases.
- The number of columns that this td element spans.
- The number of rows that this td element spans.
- The ID of the column header "th", or the row header "th" (or both), that this cell is associated with. When associated with more than one, separate the IDs with spaces.