Copy the code below to the HTML header section of your website, just above the </head> tag.
<script src="https://cdn.websitepolicies.io/lib/cconsent/cconsent.min.js" defer></script><script>window.addEventListener("load",function(){window.wpcb.init({"border":"thin","corners":"small","colors":{"popup":{"background":"#f6f6f6","text":"#000000","border":"#555555"},"button":{"background":"#555555","text":"#ffffff"}}})});</script>