docs(10_Wiki): W3Schools 위키화 — HTML/CSS/JavaScript(core)

W3Schools 튜토리얼을 P-Reinforce v3.1 포맷으로 위키화(영어 본문, 한/영 섹션 헤더).
- Topic_HTML: 59문서 (튜토리얼+예제, 레퍼런스/메타 제외)
- Topic_CSS: 190문서 (메인 + Advanced/Flexbox/Grid/RWD 전체)
- Topic_JavaScript: 120문서 (코어 언어; Temporal/DOM상세/BOM/WebAPI/AJAX/jQuery/Graphics 등은 후속)
각 폴더 00_INDEX.md(MOC) 포함. 코드 verbatim, 미확인분은 "Not found in source" 표기.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

10_Wiki/Topic_CSS/CSS_2D_Transforms_Scale.md

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+---
+id: css-2d-transform-scale
+title: "CSS 2D Transform Scale"
+category: "Frontend"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["scale()", "scaleX()", "scaleY()", "CSS scale", "2D scale transform", "resize element"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.89
+created_at: 2026-06-23
+updated_at: 2026-06-23
+review_reason: ""
+merge_history: []
+tags: ["css", "web", "frontend", "w3schools", "transform", "2d-transform", "scale"]
+raw_sources: ["https://www.w3schools.com/css/css3_2dtransforms_scale.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CSS 2D Transform Scale]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The CSS `scale()` family of 2D transform functions increases or decreases the size of an element according to the parameters given for width and height, where values above 1 enlarge and values between 0 and 1 shrink. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`scale()`** — increases or decreases the size of an element (according to the parameters given for the width and height). [S1]
+- **`scaleX()`** — increases or decreases the width of an element. [S1]
+- **`scaleY()`** — increases or decreases the height of an element. [S1]
+- **Multiplier semantics** — numeric multipliers greater than 1 enlarge the element; values between 0 and 1 reduce it. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Proportional resize** — `scale(x, y)` takes two factors: the first scales width, the second scales height. [S1]
+- **Single-axis resize** — use `scaleX(n)` to resize width only, or `scaleY(n)` to resize height only. [S1]
+
+## 📖 세부 내용 (Details)
+**The CSS `scale()` Function**
+The `scale()` function increases or decreases the size of an element (according to the parameters given for the width and height). The following example increases the `<div>` element to two times of its original width, and three times of its original height: [S1]
+```css
+div {
+  transform: scale(2, 3);
+}
+```
+The next example decreases the `<div>` element to be half of its original width and height: [S1]
+```css
+div {
+  transform: scale(0.5, 0.5);
+}
+```
+
+**The CSS `scaleX()` Function**
+The `scaleX()` function increases or decreases the width of an element. The following example increases the `<div>` element to two times of its original width: [S1]
+```css
+div {
+  transform: scaleX(2);
+}
+```
+This example decreases the `<div>` element to be half of its original width: [S1]
+```css
+div {
+  transform: scaleX(0.5);
+}
+```
+
+**The CSS `scaleY()` Function**
+The `scaleY()` function increases or decreases the height of an element. The following example increases the `<div>` element to three times of its original height: [S1]
+```css
+div {
+  transform: scaleY(3);
+}
+```
+This example decreases the `<div>` element to be half of its original height: [S1]
+```css
+div {
+  transform: scaleY(0.5);
+}
+```
+
+## 🛠️ 적용 사례 (Applied in summary)
+The page's own demonstrations apply scaling to a `<div>`: enlarging (`scale(2, 3)`, `scaleX(2)`, `scaleY(3)`) and shrinking (`scale(0.5, 0.5)`, `scaleX(0.5)`, `scaleY(0.5)`). No external project/commit applications found in the source.
+
+## 💻 코드 패턴 (Code patterns)
+Two-axis scale (language: CSS):
+```css
+div {
+  transform: scale(2, 3);
+}
+```
+Single-axis scale:
+```css
+div {
+  transform: scaleX(2);
+}
+
+div {
+  transform: scaleY(3);
+}
+```
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+No contradictions found in the source.
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.89
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[CSS Tutorial]]
+- **관련 개념:** [[CSS 2D Transforms Skew]], [[CSS 3D Transforms]], [[CSS Transitions]]
+- **참조 맥락:** Part of the CSS 2D transforms family; used to resize elements without changing their layout box flow.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — CSS 2D Transform Scale — https://www.w3schools.com/css/css3_2dtransforms_scale.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-06-23: Initial draft synthesized from the W3Schools "CSS 2D Transform Scale" page (Astra wiki-curation, P-Reinforce v3.1 format).