Rethinking the header – its visual weight and its navigation purposes

Introduction:
A web site’s navigation menus usually get placed at:
a) the top area of a web page – filling the header, that is;
b) the top (the header), on demand – by means of a hamburger menu button;
c) top + left-hand column;
d) top + f…
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Header hierarchy in setting dialog

Should the “experimental function” use a smaller header since it’s controled by the developer mode toggle switch?
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Header hierarchy in setting dialog

Should the “experimental function” use a smaller header since it’s controled by the developer mode toggle switch?
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Editing information displayed in page header

I have a page header which looks like this example from Ant Design:
I need a way to edit the information displayed in the header.
Initially I thought of having an Edit button in the header for that purpose. However, it may lead a user to …