Not to the widget output but to the output from WP_Accept_Paypal_Payment.php. And none of the fields have label tags. None of the fields are wrapped in their own div with unique classes or ids so I can easily control the layout with css.
Its not a horrible plugin. Just the html is not very workable so that means I have to edit the core plugin files to fix.
I’m sorry but I think you may have mistaken my plugin for another. My plugin is Widget CSS Classes and adds a field to the active widgets on the Appearance > Widgets page in the WordPress backend where you can add a class to the entire widget. It does not have a donation form.