height|width="% | pixels"
Determines the height and/or width, respectively, of the table data cell.
Both height and width can be expressed as a percent of the available display
space or as an absolute pixel value.
Using a percent to establish height can cause the browser trouble unless the table
data cell is already contained within a space with a proscribed height. If a
percent is used and the browser has no frame of reference by which to calculate a
cogent percent of the available height the result can be odd because, unless otherwise
defined, the amount of vertical space available is infinite.
There is no such trouble with horizontal space. Unless otherwise defined the
limits of the display screen become the standard against which the browser will
evaluate a request for some percent of the available display space.
Using absolute pixel values to determine height and/or width is far less
problematic, except in the case where a request is made for a pixel value
which exceeds the amount of display space available. In this case
the browser will simply push the limit of the display space off screen and
put up a horizontal or vertical scroll bar to allow the user to see the
entire space, some of which lies out of the range of the viewable display area.
NOTE: Height and width parameters set for a single
data cell affect the display of all other cells in the column and row in which
the data cell belongs. The browser adjusts all cells within a row and within
a column to have the same width and height, if at all possible.