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>
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id: css-border-shorthand
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title: "CSS Border Shorthand"
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category: "Frontend"
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status: "draft"
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verification_status: "conceptual"
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canonical_id: ""
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aliases: ["border shorthand", "CSS border property", "border: width style color", "border-bottom", "border-left shorthand"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.89
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created_at: 2026-06-23
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updated_at: 2026-06-23
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review_reason: ""
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merge_history: []
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tags: ["css", "web", "frontend", "w3schools", "border", "border-shorthand"]
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raw_sources: ["https://www.w3schools.com/css/css_border_shorthand.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[CSS Border Shorthand]]
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## 🎯 한 줄 통찰 (One-line insight)
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To shorten the code, the `border` property is a shorthand that combines `border-width`, `border-style` (required), and `border-color` in a single declaration, and the same pattern works for each individual side (`border-bottom`, `border-left`, etc.). [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **Shorthand purpose** — to shorten the code, it is also possible to specify all the individual border properties in one property. [S1]
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- **`border`** is a shorthand property for: `border-width`, `border-style` (required), and `border-color`. [S1]
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- **Order** — the shorthand lists width, then style, then color (e.g. `5px solid red`). [S1]
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- **Per-side shorthands** — the same approach works for individual sides such as `border-bottom` and `border-left`. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **Width–style–color triple** — collapse three declarations into one `border: <width> <style> <color>;`. [S1]
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- **Directional shorthand** — apply the same triple to one side only with `border-top/right/bottom/left`. [S1]
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## 📖 세부 내용 (Details)
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**Border - Shorthand Property** [S1]
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To shorten the code, it is also possible to specify all the individual border properties in one property.
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The `border` property is a shorthand property for the following individual border properties: [S1]
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- `border-width`
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- `border-style` (required)
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- `border-color`
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**Example** — combining width, style, and color in one declaration: [S1]
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```css
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p {
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border: 5px solid red;
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}
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```
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**Left Border** [S1]
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You can also specify all the individual border properties for just one side.
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**Example** — left side only: [S1]
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```css
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p {
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border-left: 6px solid red;
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}
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```
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**Bottom Border** [S1]
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**Example** — bottom side only: [S1]
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```css
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p {
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border-bottom: 6px solid red;
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}
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```
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## 🛠️ 적용 사례 (Applied in summary)
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The page's own applied examples are the three paragraph rules above: the full `border` shorthand, the `border-left` shorthand, and the `border-bottom` shorthand. No external project/commit applications found in the source.
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## 💻 코드 패턴 (Code patterns)
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Full border shorthand (language: CSS):
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```css
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p {
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border: 5px solid red;
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}
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```
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Single-side shorthand:
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```css
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p {
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border-left: 6px solid red;
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}
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```
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## ⚖️ 모순 및 업데이트 (Contradictions & updates)
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No contradictions found in the source.
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## ✅ 검증 상태 및 신뢰도
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- **상태:** draft
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- **검증 단계:** conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
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- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
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- **신뢰 점수:** 0.89
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- **중복 검사 결과:** 신규 생성 (New discovery)
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## 🔗 지식 그래프 (Knowledge Graph)
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- **상위/루트:** [[CSS Tutorial]]
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- **관련 개념:** [[CSS Border Style]], [[CSS Border Width]], [[CSS Border Color]], [[CSS Border Sides]]
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- **참조 맥락:** The concise way to apply width, style, and color together; preferred over separate declarations.
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## 📚 출처 (Sources)
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- [S1] W3Schools — CSS Border Shorthand — https://www.w3schools.com/css/css_border_shorthand.asp
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## 📝 변경 이력 (Change history)
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- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Border Shorthand" page (Astra wiki-curation, P-Reinforce v3.1 format).
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