Oh gosh, "chrome" here is not the browser... https://developer.mozilla.org/en-US/docs/Glossary/Chrome https://developer.mozilla.org/en-US/docs/Glossary/Chrome

Oh gosh, "chrome" here is not the browser... https://developer.mozilla.org/en-US/docs/Glossary/Chrome https://developer.mozilla.org/en-US/docs/Glossary/Chrome https://www.nngroup.com/articles/browser-and-gui-chrome/ https://www.nngroup.com/articles/browser-and-gui-chrome/ > 'Chrome' is the user interface overhead that surrounds user data and web page content. Browser/GUI's "chrome" terminology existed before google "chrome" browser. That's why you use "userChrome.css" to modify the visual look by yourself.