Background/Goal
Current Codex Dialog displays as full width & height on narrow/mobile screens. In many cases a full screen dialog is not needed and a more lightweight/smaller dialog may be more desirable. The full screen is good for continuous or multistep dialogs where we want the action button to stay in one location. However, in many cases only a brief confirmation is needed and a full screen would introduce a lot of empty space and keeps buttons far from the text.
User stories
As a designer, I would like to be able to use a smaller size dialog on mobile/small screen for lightweight confirmation flows.

