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75 lines
3.6 KiB
Markdown
75 lines
3.6 KiB
Markdown
---
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id: w3css-text
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title: "W3CSS Text"
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category: "Programming_Language"
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status: "draft"
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verification_status: "conceptual"
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canonical_id: ""
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aliases: ["text-shadow", "w3-opacity", "W3.CSS 텍스트 스타일"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.88
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created_at: 2026-07-04
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updated_at: 2026-07-04
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review_reason: ""
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merge_history: []
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tags: ["w3css", "css-framework", "w3schools", "text"]
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raw_sources: ["https://www.w3schools.com/w3css/w3css_text.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[W3CSS Text]]
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## 🎯 한 줄 통찰 (One-line insight)
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`w3-opacity` is explicitly "designed to work with all colors" as a class, while `text-shadow` requires inline `style` attributes and doesn't have a dedicated W3.CSS class — meaning opacity effects are first-class framework citizens while shadow effects lean on raw CSS3, a distinction with a practical consequence: text-shadow doesn't work in IE9 and earlier, but nothing in the source suggests w3-opacity shares that limitation. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **`w3-left-align` / `w3-right-align`** — text alignment classes. [S1]
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- **`w3-center`** — centers block-level content (not just text). [S1]
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- **`w3-wide`** — applies wider letter-spacing. [S1]
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- **`w3-opacity`** — reduces text opacity, works with any color. [S1]
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- **Text shadow — CSS3, not a W3.CSS class** — applied via inline `style="text-shadow:1px 1px 0 #444"`; NOT supported in IE9 and earlier. [S1]
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- **Composability** — opacity, shadow, bold, and color classes can all stack on one element simultaneously. [S1]
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## 📖 세부 내용 (Details)
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- Alignment: `<div class="w3-left-align"><p>Left aligned text.</p></div>` / `<div class="w3-right-align">...</div>`. [S1]
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- Centering: `<div class="w3-container w3-center"><h2>Centered Content</h2><img ...><p>Some centered text.</p></div>`. [S1]
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- Opacity: `<h2 class="w3-opacity">Text Opacity</h2>`. [S1]
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- Shadow (inline style, no dedicated class): `<h2 class="w3-blue" style="text-shadow:1px 1px 0 #444">Text Shadow</h2>`. [S1]
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- Stacked effects: `<h1 class="w3-text-yellow" style="text-shadow:1px 1px 0 #444"><b>Yellow Text + Shadow + Bold</b></h1>`. [S1]
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## ⚖️ 모순 및 업데이트 (Contradictions & updates)
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- **text-shadow의 브라우저 제약**: IE9 이하에서는 text-shadow가 동작하지 않는다는 점이 명시적으로 경고됨. [S1]
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## 🛠️ 적용 사례 (Applied in summary)
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현재 발견된 실제 적용 사례가 없습니다 — 투명도+그림자+굵게를 조합한 특수 텍스트 효과가 실전 활용의 대표 사례다. [S1]
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## 💻 코드 패턴 (Code patterns)
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Combining opacity, color, shadow, and bold on one heading (HTML):
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```html
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<div class="w3-panel w3-blue">
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<h1 class="w3-text-orange" style="text-shadow:1px 1px 0 #444">
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<b>Orange Text + Shadow + Bold</b>
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</h1>
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</div>
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```
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## ✅ 검증 상태 및 신뢰도
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- **상태:** draft
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- **검증 단계:** conceptual
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- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
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- **신뢰 점수:** 0.88
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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:** [[W3.CSS Tutorial]]
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- **관련 개념:** [[W3CSS Fonts Google]], [[W3CSS Round]]
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- **참조 맥락:** 텍스트 시각 효과 — 둥근 모서리(Round) 챕터로 이어짐.
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## 📚 출처 (Sources)
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- [S1] W3Schools — W3.CSS Text — https://www.w3schools.com/w3css/w3css_text.asp
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## 📝 변경 이력 (Change history)
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- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Text" page (Astra wiki-curation, P-Reinforce v3.1 format).
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