Ublock with the annoyances filters enabled hides most of them perfectly, and if the website uses some obscure toolkit/creates its own banner you can always remove it using the content selector
Hence, there is no need for the the extension mentioned in the parent comment
And fun fact, it's developed by Danish researchers:
This add-on is built and maintained by workers at Aarhus University in Denmark. We are privacy researchers that got tired of seeing how companies violate the EU's General Data Protection Regulation (GDPR). Because the organisations that enforce the GDPR do not have enough resources, we built this add-on to help them out.