docs(10_Wiki): Topic_Business/General/Graphic/Programming을 Topics/ 하위로 이동

최상위 10_Wiki/Topic_*였던 4개 카테고리 폴더를 10_Wiki/Topics/Topic_* 로 재배치. 콘텐츠 변경 없음(순수 폴더 이동) — Topics/ 하위 나머지 폴더는 이미 지난 커밋에서 전부 정리된 상태(잔존 항목은 에이전트 운영 상태 및 사용자가 보존을 요청한 업데이트0615/무제 3.canvas 뿐).
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+---
+id: w3css-grid
+title: "W3CSS Grid"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["w3-grid", "CSS Grid", "W3.CSS 그리드"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.87
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["w3css", "css-framework", "w3schools", "grid", "css-grid"]
+raw_sources: ["https://www.w3schools.com/w3css/w3css_grid.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[W3CSS Grid]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+`w3-grid` is a thin wrapper (essentially just `display: grid`) that hands full control to STANDARD CSS Grid properties applied via inline `style` — `grid-template-columns`, `grid-column-start`, `gap`, etc. — meaning learning W3.CSS grid is really learning native CSS Grid, not a proprietary abstraction layer. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`w3-grid`** (W3.CSS 5.0+) — creates a two-dimensional grid container; children automatically become grid items. [S1]
+- **`w3-grid-padding`** — the padded variant. [S1]
+- **`grid-template-columns`** — sets column count/widths; accepts `auto`, `fr` (fractional), `px`, `%`, or `repeat()`. [S1]
+- **`repeat(auto-fit, minmax(150px, 1fr))`** — a common responsive pattern letting columns auto-adjust to available width. [S1]
+- **Item placement properties** — `grid-column-start`/`-end`, `grid-row-start`/`-end`, and their shorthands `grid-column`/`grid-row` (e.g. `grid-column:1/span 2` spans an item across 2 columns). [S1]
+- **`grid-template-areas`** — names regions of the grid for semantic placement via `grid-area`. [S1]
+- **Alignment** — `justify-content` (horizontal), `align-content` (vertical) — same value vocabulary as flexbox (`center`, `space-between`, `space-evenly`, etc.). [S1]
+
+## 📖 세부 내용 (Details)
+- Responsive auto-fit columns: `<div class="w3-grid" style="grid-template-columns:repeat(auto-fit,minmax(150px,1fr))">`. [S1]
+- Spanning an item across columns: `<div style="grid-column:1/span 2">1</div>` inside a `w3-grid` container. [S1]
+- Named grid areas: `<div class="w3-grid" style="grid-template-areas:'myArea myArea . .'"> <div style="grid-area:myArea">1</div> ...</div>`. [S1]
+- Gap control: `<div class="w3-grid" style="gap:2px">`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **w3-grid vs w3-flex의 차원 차이**: grid는 행+열 2차원, flex는 행 또는 열 1차원 레이아웃이라는 점이 명시적으로 대비됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — repeat(auto-fit, minmax()) 패턴이 반응형 카드 그리드 구성의 표준 실전 기법이다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Responsive auto-fitting grid columns (HTML/CSS):
+```html
+<div class="w3-grid" style="grid-template-columns:repeat(auto-fit,minmax(150px,1fr))">
+  <div>1</div><div>2</div><div>3</div><div>4</div>
+</div>
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.87
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[W3.CSS Tutorial]]
+- **관련 개념:** [[W3CSS Icons]], [[W3CSS Flexbox]], [[W3CSS Rows]]
+- **참조 맥락:** 2차원 그리드 레이아웃 — 1차원 플렉스박스(Flexbox) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — W3.CSS Responsive Grid — https://www.w3schools.com/w3css/w3css_grid.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Responsive Grid" page (Astra wiki-curation, P-Reinforce v3.1 format).