I want to fix the width of the table post to the length of the letter.

Sibambang

Link to test case:
https://codepen.io/hurwgvhl-the-vuer/pen/PobvyXo

Description of problem:

The 'th' value is fluid and cannot be initially specified.

I want to change the width of 'th' flexibly whenever data is retrieved. Or
You are about to assign an entire 'th' area at a time.

colin

That test case isn't running, so it's hard to see what you're after. Could you get it so the table initialises, please, then identify the issue and what you would expect the outcome to be,

Colin