Using cell style, how to realize that the two side lines of the header are 0, but the middle column

Hi 喜狼_edny,

what exactly is unclear now?

I gave you an answer here with some test documents you can download. Inspect them, look into the applied table style and the used cell styles and see how they work together.

Regards,
Uwe Laubender

( ACP )

You seem to not read the answers we give you!

The header column stroke can be parametered in the table style!

https://community.adobe.com/t5/indesign/can-table-and-cell-styles-automatically-achieve-this-effect/m-p/11945649#M420904

(^/)  The Jedi

You may now criticize that you need no footer row, but a footer row is required for the thick stroke at the bottom of your table. If you define a minimum height for the footer your design will work.

To define a minimum height:

Set the top and bottom insets of the footer to 0.

Set the applied paragraph style's point size for the footer to 0.1 Pt

That gives you this design where the footer cells come with a minimum height of 1.058 mm.

You still can try to decrease that height, but for this you need a script.

Select all cells in the footer row and run the ExtendScript (JavaScript) code below:

app.selection[0].cells.everyItem().height = "0.1 mm";

This will still reduce the height of the selected cells, but not as much as you like.

The minimum heigth value is set to 0.1 mm as the UI is showing, but the real height of the footer is still 0.55 mm. A bareer you cannot break in InDesign:

Download this variant of my document from my Dropbox account:

https://www.dropbox.com/s/poj63rt7r3rabw4/CustomTableStyle-3-CellStyles-FooterMinimumHeight-2021.indd?dl=1

So to answer your initial question:

With one exception, the stroke at the bottom of the table, you can do the design by applying a table style to a table.

I tried that workaround with a footer row, but this also requires manual intervention.

Regards,
Uwe Laubender

( ACP )