# Conceptual Explanations

Add brief 'Why This Works' explanations to each lesson that explain the concept behind the CSS property, not just the syntax. Include visual diagrams where helpful.

## Rationale
The #1 criticism of Flexbox Froggy and similar tools is they teach syntax without explaining WHY. Codecademy and freeCodeCamp also criticized for 'just type this without understanding'. This is a major market gap we can fill.

## User Stories
- As a beginner, I want to understand WHY CSS properties work so that I can apply knowledge to new situations
- As a self-taught developer, I want conceptual understanding so that I can build from scratch, not just follow tutorials

## Acceptance Criteria
- [ ] Each lesson includes a 'Concept' section explaining WHY the CSS property works
- [ ] Explanations are concise (2-4 sentences) and beginner-friendly
- [ ] Visual diagrams or illustrations included where helpful
- [ ] Concept section is collapsible so advanced users can skip
- [ ] Flexbox lessons explicitly explain container vs item distinction