The width of a column may be specified relative to the other column widths. A relative width is specified by the style:rel-column-width property that takes a number value, followed by a '*' character. If rc is the relative with of the column, rs the sum of all relative columns widths, and ws the absolute width that is available for these columns, then the absolute with wc of the column is wc=rcws/rs.

• The table has relative column widths, they are 100*, 200*, 300* and 400* wide respectively