codex - 💡(How to fix) Fix Support full-width / wide message layout in Codex App

Summary

Codex App currently renders conversation content in a fixed-width center column. On wide screens, large blank areas remain on both sides of the message content. This makes long technical answers, code blocks, logs, tables, and step-by-step instructions wrap too aggressively, reducing readability and wasting available screen space.

Current behavior

When the app window is wide or maximized, message content remains constrained to a narrow central column. The left and right side areas stay empty and cannot be used for text display.

Expected behavior

Please provide a layout option that allows users to choose a wider or full-width message area.

Possible options:

1. Add a setting such as Message width: Default / Wide / Full width.
2. Allow code blocks and long technical responses to use more horizontal space.
3. Remember the user's preferred layout across sessions.
4. Keep the current default layout unchanged for users who prefer the existing reading width.

Why this matters

For coding workflows, users frequently read:

• terminal output
• deployment logs
• stack traces
• markdown documentation
• long shell commands
• code snippets
• API walkthroughs

A narrow fixed-width column causes unnecessary wrapping and makes technical content harder to scan. Wide-screen users expect the app to make better use of available horizontal space.

Environment

Codex desktop app on a wide-screen layout. The issue is especially visible when the app window is maximized.

Suggested UX

A simple setting would be enough:

Message width
- Comfortable
- Wide
- Full width

This would improve technical reading workflows without changing the default layout for existing users.