Cookie consent script

Guys, I need your help. I just bought and downloaded cookie consent script (code). They wrote me to insert the code in the header of the website as the first script before all other scripts. This code should be inserted on every page where the banner should be shown.
My question is which file is best to put the code in.

Many thanks!

Normally you would put the code in tpl/layout/base.tpl in OXID 6 or tpl/layout/base.html.twig in OXID 7.

thanks for your reply. I have older version of oxid eshop 4.10.8. I’m using flow theme. Is application\views\flow\tpl\layout\base.tpl ok?