W3C CSS2 Cascading Style Sheets, level 2 - instructional media + ...

larger). The maximum is that required by the cell with the largest maximum
cell width (or the column ’width’, whichever is larger).
3. For each cell that spans more than one column, increase the minimum
widths of the columns it spans so that together, they are at least as wide as
the cell. Do the same for the maximum widths. If possible, widen all spanned
columns by approximately the same amount.
This gives a maximum and minimum width for each column. Column widths
influence the final table width as follows:
1. If the ’table’ or ’inline-table’ element’s ’width’ property has a specified value
(W) other than ’auto’, the property’s computed value is the greater of W and
the minimum width required by all the columns plus cell spacing or borders
(MIN). If W is greater than MIN, the extra width should be distributed over
the columns.
2. If the ’table’ or ’inline-table’ element has ’width: auto’, the computed table
width is the greater of the table’s containing block width and MIN. However,
if the maximum width required by the columns plus cell spacing or borders
(MAX) is less than that of the containing block, use MAX.
A percentage value for a column width is relative to the table width. If the table
has ’width: auto’, a percentage represents a constraint on the column’s width,
which a UA should try to satisfy. (Obviously, this is not always possible: if the
column’s width is ’110%’, the constraint cannot be satisfied.)
Note. In this algorithm, rows (and row groups) and columns (and column
groups) both constrain and are constrained by the dimensions of the cells they
contain. Setting the width of a column may indirectly influence the height of a
row, and vice versa.
17.5.3 Table height algorithms
The height of a table is given by the ’height’ property for the ’table’ or ’inline-table’
element. A value of ’auto’ means that the height is the sum of the row heights
plus any cell spacing or borders. Any other value specifies the height explicitly;
the table may thus be taller or shorter than the height of its rows. CSS2 does not
specify rendering when the specified table height differs from the content height,
in particular whether content height should override specified height; if it doesn’t,
how extra space should be distributed among rows that add up to less than the
specified table height; or, if the content height exceeds the specified table height,
whether the UA should provide a scrolling mechanism. Note. Future versions of
CSS may specify this further.
The height of a ’table-row’ element’s box is calculated once the user agent has
all the cells in the row available: it is the maximum of the row’s specified ’height’
and the minimum height (MIN) required by the cells. A ’height’ value of ’auto’ for
a ’table-row’ means the computed row height is MIN. MIN depends on cell box
heights and cell box alignment (much like the calculation of a line box [p. 141]
height). CSS2 does not define what percentage values of ’height’ refer to when
specified for table rows and row groups.
In CSS2, the height of a cell box is the maximum of the table cell’s ’height’
property and the minimum height required by the content (MIN). A value of ’auto’
for ’height’ implies a computed value of MIN. CSS2 does not define what
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