docs(10_Wiki): Dev 폴더 누락분 반영 — Topic_Programming으로 통합
이전 재구성 작업에서 Dev/ 폴더가 누락되었던 것을 반영. - Dev/Topic_Programming(중첩 폴더, 78개)은 Dev 자체 최상위 폴더들 (Architecture/Conventions/Engineering_Intelligence 등)과 완전 중복이라 제거. - Dev 최상위 엔지니어링 지식 폴더(Architecture/Conventions/Engineering_Intelligence/ Failure_Library/Generalized_Principles/Language/Pattern_Catalog/Platform_Guides/ Subsystems, 77개)는 이미 Topic_Programming/Topic_Programming에 더 최신 버전이 존재해 중복 제거(고유 콘텐츠 1개는 예외 처리하여 이동 보존). - Dev의 W3Schools 언어 튜토리얼 폴더(Topic_C/CPP/CSS/CSharp/HOWTO/HTML/Java/ JavaScript/PHP/Python/SQL/W3CSS, 1201개)는 전부 Topic_Programming 하위로 이동. - 에이전트 운영 상태(.astra/docs)는 그대로 유지, 콘텐츠 폴더만 정리. - Topic_Programming 최종 문서 수: 2784 → 3985.
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Antigravity Agent
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---
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id: css-add-inline
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title: "CSS Add Inline"
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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: ["inline CSS", "inline style", "style attribute", "element-level style", "single element styling"]
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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", "stylesheet"]
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raw_sources: ["https://www.w3schools.com/css/css_howto_inline.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[CSS Add Inline]]
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## 🎯 한 줄 통찰 (One-line insight)
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An inline style applies a unique style to a single element via its `style` attribute, but it loses many advantages of a style sheet by mixing content with presentation, so it should be used sparingly. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **Purpose** — an inline style may be used to apply a unique style for a single element. [S1]
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- **Mechanism** — to use inline styles, add the `style` attribute to the relevant element. [S1]
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- **Content** — the `style` attribute can contain any CSS property declarations. [S1]
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- **Caveat** — an inline style loses many of the advantages of a style sheet (by mixing content with presentation); use this method sparingly. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **Per-element override** — attach declarations directly to one element via `style="property:value;…"`. [S1]
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- **Use sparingly** — prefer external/internal sheets to keep content and presentation separate. [S1]
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## 📖 세부 내용 (Details)
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An inline style may be used to apply a unique style for a single element. To use inline styles, add the `style` attribute to the relevant element. The `style` attribute can contain any CSS property. [S1]
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```html
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<!DOCTYPE html>
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<html>
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<body>
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<h1 style="color:blue;text-align:center;">This is a heading</h1>
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<p style="color:red;">This is a paragraph.</p>
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</body>
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</html>
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```
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Here the `<h1>` element is given blue, center-aligned text, and the `<p>` element is given red text — all directly through their `style` attributes. [S1]
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**Tip:** An inline style loses many of the advantages of a style sheet (by mixing content with presentation). Use this method sparingly. [S1]
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## 🛠️ 적용 사례 (Applied in summary)
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The page's own example applies inline styles to an `<h1>` (blue, centered) and a `<p>` (red). No external project/commit applications found in the source.
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## 💻 코드 패턴 (Code patterns)
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Inline style via the style attribute (language: HTML):
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```html
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<h1 style="color:blue;text-align:center;">This is a heading</h1>
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<p style="color:red;">This is a paragraph.</p>
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```
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## ⚖️ 비교 및 선택 기준 (Comparison & decision criteria)
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| Method | How it is added | Best use |
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| --- | --- | --- |
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| External CSS | `<link>` to a `.css` file | Style an entire website from one file [S1] |
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| Internal CSS | `<style>` element in the head | A single page with a unique style [S1] |
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| Inline CSS | `style` attribute on an element | A unique style for a single element; use sparingly [S1] |
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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 Add External]], [[CSS Add Internal]], [[CSS Multiple Style Sheets]]
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- **참조 맥락:** Referenced when styling one element directly, and as the highest-priority source in the cascade.
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## 📚 출처 (Sources)
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- [S1] W3Schools — CSS Add Inline — https://www.w3schools.com/css/css_howto_inline.asp
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## 📝 변경 이력 (Change history)
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- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Add Inline" page (Astra wiki-curation, P-Reinforce v3.1 format).
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