Hi!
First, the big subject of this article series is *web applications* and not *web pages*. It's a bit confusing because any web application is also a web page. Let's make it clear.
Web page:
https://www.bobsprite.com/editor
The web page is constructed in plain HTML and works fine.
About "If Chrome is doubling your menu, there's something wrong with how you coded the menu.":
About "HTML and CSS are piss simple.":
I respect your opinion, but I think don't think so.
About "It's also quite telling... frameworks...":
October 3, 2017 Daniel Imms, @Tyriar
https://code.visualstudio.com/blogs/2017/10/03/terminal-renderer