How to add a cookie plugin to a static HTML site (archived wordpress page)?

I am hosting an old website that is used as an archive and is usually not edited anymore. I converted the Wordpress page to a static HTML page by using wget. This means I do not have to apply new updates everytime wordpress releases newer versions. Due to a new German law I have to add a Cookie-Note on every subpage. As the website is static I do not have the opportunity to add a plugin so I have to do it manually.

Is there a way to automatically overlay a cookie-note on every subpage?

Best, Hannes