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id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit
id title category status verification_status canonical_id aliases duplicate_of source_trust_level confidence_score created_at updated_at review_reason merge_history tags raw_sources applied_in github_commit
w3css-panels W3CSS Panels Programming_Language draft conceptual
w3-panel
W3.CSS 패널
B 0.9 2026-07-04 2026-07-04
w3css
css-framework
w3schools
panels
https://www.w3schools.com/w3css/w3css_panels.asp

W3CSS Panels

🎯 한 줄 통찰 (One-line insight)

w3-panel is just w3-container plus 16px top/bottom margin — one small structural difference that makes it the base class for FOUR distinct UI patterns (notes, quotes, alerts, cards) purely by combining it with different color/style modifier classes, rather than needing four separate component classes. [S1]

🧠 핵심 개념 (Core concepts)

  • w3-panel — adds 16px top/bottom margin AND 16px left/right padding (container + vertical spacing). [S1]
  • Notes — panel + pale color (e.g. w3-pale-green). [S1]
  • Quotes — panel + w3-leftbar w3-sand w3-xxlarge w3-serif. [S1]
  • Alerts — panel + strong/saturated color (e.g. plain w3-red). [S1]
  • Cards — panel + w3-card-4. [S1]
  • Show/hide via inline onclick — no JS file needed; this.parentElement.style.display='none' closes a panel; document.getElementById(...).style.display='block' reopens it. [S1]

📖 세부 내용 (Details)

  • Basic panel: <div class="w3-panel w3-red"><p>I am a panel.</p></div>. [S1]
  • Note styling: <div class="w3-panel w3-pale-green"><p>...</p></div>. [S1]
  • Quote styling: <div class="w3-panel w3-leftbar w3-sand w3-xxlarge w3-serif"><p><i>"Make it as simple as possible, but not simpler."</i></p></div>. [S1]
  • Hide a panel: <span onclick="this.parentElement.style.display='none'" class="w3-button w3-display-topright">X</span>. [S1]
  • Show a hidden panel: <button onclick="document.getElementById('id01').style.display='block'">Show panel</button>. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

소스에서 모순되는 정보는 발견되지 않음.

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 하나의 w3-panel 기반 클래스로 노트/인용문/알림/카드 4가지 UI 패턴을 구현하는 것이 클래스 조합 설계의 대표 사례다. [S1]

💻 코드 패턴 (Code patterns)

Dismissible panel using inline onclick, no JS file needed (HTML):

<div class="w3-panel w3-display-container">
  <span onclick="this.parentElement.style.display='none'"
        class="w3-button w3-display-topright">X</span>
  <p>Click on the X to close this panel.</p>
</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)

📚 출처 (Sources)

📝 변경 이력 (Change history)

  • 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Panels" page (Astra wiki-curation, P-Reinforce v3.1 format).