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_Outline_Width.md

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+---
+id: css-outline-width
+title: "CSS Outline Width"
+category: "Frontend"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["outline-width", "CSS outline width", "thin medium thick outline", "outline size", "outline thickness"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.88
+created_at: 2026-06-23
+updated_at: 2026-06-23
+review_reason: ""
+merge_history: []
+tags: ["css", "web", "frontend", "w3schools", "outline", "outline-width"]
+raw_sources: ["https://www.w3schools.com/css/css_outline_width.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[CSS Outline Width]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The `outline-width` property specifies the width of an outline, set either as a keyword (`thin`, `medium`, `thick`) or as a specific size. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **Purpose** — the `outline-width` property specifies the width (thickness) of an outline. [S1]
+- **Keyword values** — `thin` (typically 1px), `medium` (typically 3px), and `thick` (typically 5px). [S1]
+- **Explicit size** — a specific size in px, pt, cm, em, etc. [S1]
+
+## 🧩 추출된 패턴 (Extracted patterns)
+- **Keyword vs. explicit** — use `thin`/`medium`/`thick` for quick relative sizing, or a length unit when an exact thickness is required. [S1]
+- **Requires a style** — `outline-width` is only visible alongside a set `outline-style` (e.g., `solid`). [S1]
+
+## 📖 세부 내용 (Details)
+**Accepted values**
+The `outline-width` property specifies the outline's dimensions with these accepted values: [S1]
+- `thin` (typically 1px)
+- `medium` (typically 3px)
+- `thick` (typically 5px)
+- a specific size in px, pt, cm, em, etc.
+
+**Demo example** — demonstration of different outline widths, each class applying a different `outline-width` value to paragraphs styled with solid green outlines and 5px padding: [S1]
+```css
+p {
+  padding: 5px;
+  outline-style: solid;
+  outline-color: green;
+}
+
+p.ex1 {
+  outline-width: thin;
+}
+
+p.ex2 {
+  outline-width: medium;
+}
+
+p.ex3 {
+  outline-width: thick;
+}
+
+p.ex4 {
+  outline-width: 8px;
+}
+```
+
+## 🛠️ 적용 사례 (Applied in summary)
+The four-class demo above is the page's own applied example, showing `thin`, `medium`, `thick`, and an explicit `8px` outline. No external project/commit applications found in the source.
+
+## 💻 코드 패턴 (Code patterns)
+Set outline width by keyword or length (language: CSS):
+```css
+p.ex2 {
+  outline-style: solid;
+  outline-width: medium;
+}
+
+p.ex4 {
+  outline-style: solid;
+  outline-width: 8px;
+}
+```
+
+## ⚖️ 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:** 0.88
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[CSS Tutorial]]
+- **관련 개념:** [[CSS Outline Style]], [[CSS Outline Color]], [[CSS Box Model]]
+- **참조 맥락:** Referenced when adjusting the thickness of an element's outline.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — CSS Outline Width — https://www.w3schools.com/css/css_outline_width.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Outline Width" page (Astra wiki-curation, P-Reinforce v3.1 format).