There are a few advanced table properties that enable you to fine-tune the manner in which tables are rendered and displayed.
Usage
Sets the border model of a table.
Values
collapse, separate.
Sets the distance between the borders of adjacent cells.
length length.
Sets the position of the caption relative to the table.
top, bottom, left, right.
Determines whether cells with no visible content should have borders.
show, hide.
Determines how the table is laid out.
auto, fixed.
Notes
Speeds up browser rendering for fixed-size tables if you set it to fixed.