domenic
commented
5 days ago This is already how the web work's (the user's preferred width is their window width, and pages can use CSS to contract or expand this further). So I'll close this.
If there's a further feature request here, then it sounds like it's related to styling/layout, so HTML is not the appropriate place to file such a feature request. It sounds like it may be either a browser feature to have "two windows" (one inner and one outer), in which case you should file the request on browsers, or some sort of CSS feature, in which case you should file a feature request with the CSSWG.
What problem are you trying to solve?
The user should be able to control page width. For example, an unstyled page should show in the user's preferred page width by default, instead of the screen/window width. Pages can then adjust their width based on the preferred width. Also, it should be possible to set a preferred width bigger than the screen width, for example if the user happens to prefer horizontal scrollbars on mobile. This is a major unsolved accessibility issue with the web. We need the ability to adjust page width independently of screen/window size.
What solutions exist today?
There are none. Some userstyles provide site-specific hacks (see e.g. any of a number of wide-github userstyles), but they break regularly.
How would you solve it?
No response
Anything else?
No response