In a fixed table layout, using the CSS property table-layout: ______;, the horizontal layout only depends on the table's width and the width of the columns, not the contents of the cells.

The table-layout: fixed; property in CSS allows for faster rendering of tables by assigning a fixed layout. Here, column widths are set by the widths of the col or colgroup elements or by the first row of cells, rather than the content within the cells themselves. This ensures a more predictable rendering behavior but requires the designer to specify column widths explicitly.