How to design a template for printing offers and invoices?

great tool, thnx for sharing!
I installed wkhtmltopdf and it works. One promblem though is that the HTML-template is not embedded. only the text is shown.

Could someone please guide me to how I coul design a template for printing offers and invoices to my pleasure? every hint is gratefully accepted!

I yet only found out how to edit files in modules/sales/templates. Odoo videos show that you can edit templates inside the frontend-“backend”.

Maybe the module
is your solution to create your own templates. But with this module you need to create new templates from scratch because the existing templates are to complex to manipulate by this module.

We always make new apps to create or change existing templates.