Codex Zero to Hero
Module 09: Codex for Editing Existing Websites
A practical module for moving from concept to safe Codex execution.
Learning Outcomes
- Explain the topic in beginner-friendly language.
- Prompt Codex with context, constraints, and done-when criteria.
- Review output safely before publishing.
Safety Note
Use branches, backups, previews, and human review. Do not deploy untested code or commit secrets.
Module progress
0/7 lessons complete – 0% complete
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Lessons
Make Small Website Changes Safely
By the end, learners can explain make small website changes safely, ask Codex for focused help, review the result, and decide the next safe step.
Fix Layout Bugs Without Breaking Themes
By the end, learners can explain fix layout bugs without breaking themes, ask Codex for focused help, review the result, and decide the next safe step.
Inspect CSS Before Adding CSS
By the end, learners can explain inspect css before adding css, ask Codex for focused help, review the result, and decide the next safe step.
Work With Images, Links, and Navigation
By the end, learners can explain work with images, links, and navigation, ask Codex for focused help, review the result, and decide the next safe step.
Mobile-First Website Edits
By the end, learners can explain mobile-first website edits, ask Codex for focused help, review the result, and decide the next safe step.
Request Before/After QA Notes
By the end, learners can explain request before/after qa notes, ask Codex for focused help, review the result, and decide the next safe step.
Module Capstone: Improve an Existing Page
By the end, learners can explain module capstone: improve an existing page, ask Codex for focused help, review the result, and decide the next safe step.
Module Project
Create a practical artifact for codex for editing existing websites: a prompt pack, checklist, issue brief, page draft, QA report, or deployment note.
Quiz
- What context should Codex inspect first?
- What should you review before accepting changes?
- What rollback step protects the work?
Answer key
Inspect relevant files and errors, review diffs and tests, and keep a backup, branch, or preview rollback plan.
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