How to style the browser window, alert, push, geolocation?

Sometimes you meet a revamped Windows push notification on some sites, but I thought they generally cannot be changed. In General how to style these Windows CSS? And is it even possible? Probably the sites where I've seen stylized Windows use third-party services that in turn are interacting with the site API, and Windows, in fact the elements of the page markup, not "browser elements" (because they usually look like the browser itself, i.e. a kind of trust signal the user that this is exactly what the user expects to happen.
July 2nd 19 at 13:24
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