Hello, Thank you for your help. That cleared me up.
I will give up the image. (What I wanted was to customize the title of the modules)
You gave me the idea of another alternative.
As you explained for an icon, modifying the css.
I think I can do the same thing to "customize" the module title.
Put it in bold, in color, under a background of color, or even change font.
Thank you for your help