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title

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):

<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).

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