This commit removes the 'bg-white' and 'pt-3' classes used in the Notebook template since commit https://github.com/odoo/odoo/commit/68f1c90a031a7c2f751d9c8eca7ff525e9f7e206. Now that the component is used by other components, such as the media dialog from web_editor, it is not appropriate to add such style in the core component. Also, removing the bg-white class has no concrete effect in form views, so it can be removed safely. closes odoo/odoo#100253 Signed-off-by: Quentin Smetz (qsm) <qsm@odoo.com>