It looks like they don't have to, my favourite chrome extension Viumium just uses a youtube videos as it's header. https://chrome.google.com/webstore/detail/db

It looks like they don't have to, my favourite chrome extension Viumium just uses a youtube videos as it's header. https://chrome.google.com/webstore/detail/dbepggeogbaibhgnhhndojpepiihcmeb?newlook https://chrome.google.com/webstore/detail/dbepggeogbaibhgnhh...