Fully agree

Vicent

Hi,

You are right there's no "webpart css map" document.
The structure is however quite transparent.

Generally, layout of the webpart can be modified in the "Layout" tab of the properties dialog. That layout is then stored for specific page template.
If the webpart uses Form Engine form, then the layout for that form is defined separately and can be modified in the Layout definition for that form.
You can also set the Design properties of the given fields and their controls in the Field tab for the form, including system tables (or also e.g. Bizform definition) in the "Design" section:

Caption style
Here you can add CSS styles for the caption of a given attribute.

Input style
Here you can add CSS styles for the input of a given attribute.

Control CSS class
CSS class name which will style this property.


Then, you just need to link your CSS stylesheet (either in Content Before of the webpart or using "General / HTML Head" webpart in the Page template with this webpart) with the specific classes defined.

Hope this helps.

Regards,
Zdenek