docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

Topic_CSS/Topic_HTML/Topic_JavaScript/Topic_Prompt/Topic_Comfyui 등 기존 카테고리 폴더를 정리하고, Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.
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+---
+id: w3css-buttons
+title: "W3CSS Buttons"
+category: "Programming_Language"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["w3-button", "w3-btn", "W3.CSS 버튼"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.9
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["w3css", "css-framework", "w3schools", "buttons"]
+raw_sources: ["https://www.w3schools.com/w3css/w3css_buttons.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[W3CSS Buttons]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+W3.CSS's philosophy is that ANY element can be a button, not just `<button>` — the tutorial explicitly shows `<input type="button">` and `<a>` tags gaining identical button behavior from the same `w3-button`/`w3-btn` classes, and even states "Any div, header, footer or other containers can be a w3-button" with a live image demonstrating a picture styled as a clickable button. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`w3-btn`** — rectangular button with a SHADOW hover effect; default color black. [S1]
+- **`w3-button`** — rectangular button with a GRAY hover effect; default color inherits from parent (v4+). [S1]
+- **`w3-bar`** — horizontal container for grouping buttons (navigation menus). [S1]
+- **`w3-bar-item`** — removes the gap between grouped buttons inside a `w3-bar`. [S1]
+- **`w3-block`** — full-width (100%) button. [S1]
+- **`w3-circle`** — circular button. [S1]
+- **`w3-ripple`** — click-triggered ripple animation effect. [S1]
+- **`w3-disabled`** — CSS-only disabled appearance (opaque, "no parking sign" cursor) for elements that don't support the native `disabled` attribute (like `<a>`). [S1]
+- **`w3-show-inline-block`** — lets multiple `w3-bar` groups sit on the same line. [S1]
+
+## 📖 세부 내용 (Details)
+- Any element as a button: `<input class="w3-button w3-black" type="button" value="Input Button"> <button class="w3-button w3-black">Button Button</button> <a href="..." class="w3-button w3-black">Link Button</a>`. [S1]
+- Grouped, gapless bar buttons: `<div class="w3-bar"><button class="w3-bar-item w3-button w3-black">Button</button>...</div>`. [S1]
+- Full-width with custom width via inline style: `<button class="w3-button w3-block w3-black" style="width:30%">Button</button>`. [S1]
+- Disabled link (since `<a>` has no native `disabled` attribute): `<a class="w3-button w3-disabled" href="...">Link Button</a>`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+- **모든 요소가 버튼이 될 수 있음**: div, header, footer, 심지어 이미지까지도 w3-button/w3-btn 클래스로 버튼처럼 동작할 수 있다는 점이 명시적으로 시연됨. [S1]
+
+## 🛠️ 적용 사례 (Applied in summary)
+현재 발견된 실제 적용 사례가 없습니다 — w3-bar-item으로 간격 없이 버튼을 묶어 내비게이션 바를 만드는 것이 실전 UI 구성의 대표 사례다. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Gapless button bar acting as a navigation menu (HTML):
+```html
+<div class="w3-bar w3-black">
+    <button class="w3-bar-item w3-button">Button</button>
+    <button class="w3-bar-item w3-button">Button</button>
+    <button class="w3-bar-item w3-button">Button</button>
+</div>
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
+- **신뢰 점수:** 0.90
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[W3.CSS Tutorial]]
+- **관련 개념:** [[W3CSS Display]], [[W3CSS Notes]], [[W3CSS Bars]]
+- **참조 맥락:** 버튼 클래스 체계 — 노트(Notes) 챕터로 이어짐.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — W3.CSS Buttons — https://www.w3schools.com/w3css/w3css_buttons.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Buttons" page (Astra wiki-curation, P-Reinforce v3.1 format).