I am sorry. This does not work. Even if all alignments are unclicked, the html code in the template by default includes for every <th> and <td> a style='text-align:center' statement that cannot be overwritten by the CSS file. CSS in the 'style' statement has higher priority than CSS in the file.

I think 'style' statements set by default should be avoided as much as possible in the generated code as they overwrite any general settings defined on a higher level.

Well.

Fixed.

This now works perfect as desired! Thank you for the quick fix!

In the frontend, this has been reverted back again to text-align: center, (in the css file). If all the align buttons are unset, there should be no text-aligning at all in the css file.

Center or left... It is a question of choice.

Everything is OK.
Since the begining, default alignment is setted to center in CSS for few reasons :

1. (And the most important). You SHOULD open your component to customize at least the template and the CSS. Cook is a tool. Not a generator for lazy behaviors. This is an educative tool and our politic is not to help people that copy/paste in continuation without trying to understand anything.
It is not possible to always fits the exact needs of all projects. If a such software do this, it should be very comlipicated to setup. Cook is a balance between power and simplicity of use.

2. Centering is in almost case the most readable when you develop (to my opinion). Except for numbers, but, you always can setup it.

3. In back end template (I don't remember 1.5 or 1.6) it is setted center by default.

4. Why do not avoid CSS entry ? Because for beginners who want to change it, the CSS entry is created, so they recognize, and change it.