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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
w3css-margins W3CSS Margins Programming_Language draft conceptual
w3-margin
w3-section
W3.CSS 마진
B 0.88 2026-07-04 2026-07-04
w3css
css-framework
w3schools
margins
https://www.w3schools.com/w3css/w3css_margins.asp

W3CSS Margins

🎯 한 줄 통찰 (One-line insight)

w3-section exists specifically because many HTML elements have NO default top/bottom margin — the source demonstrates two colored blocks touching with zero gap between them until w3-section is added, showing this class solves a real visual problem (elements running together) rather than being purely decorative. [S1]

🧠 핵심 개념 (Core concepts)

  • w3-margin — 16px margin on ALL sides. [S1]
  • w3-margin-{top,right,bottom,left} — 16px margin on one specific side. [S1]
  • w3-section — 16px TOP and BOTTOM margin, specifically to separate stacked elements that lack default spacing. [S1]

📖 세부 내용 (Details)

  • All-sides margin: <div class="w3-container w3-margin"><p>I have 16px margin on all sides.</p></div>. [S1]
  • Directional margin: <div class="w3-container w3-margin-top"><p>I have 16px margin on the top.</p></div>. [S1]
  • Section separation: <div class="w3-container w3-section w3-blue"><h1>I am Blue</h1></div> <div class="w3-container w3-section w3-green"><h1>I am Green</h1></div> — without w3-section, the two blocks would touch with no gap. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

  • 기본 마진이 없는 요소 문제: 많은 HTML 요소에 기본 상하 마진이 없어 서로 붙어버리는 문제를 w3-section이 해결한다는 점이 시각적 비교로 증명됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — 연속된 컨테이너 블록들을 w3-section으로 구분하는 것이 레이아웃 분리의 대표 실전 사례다. [S1]

💻 코드 패턴 (Code patterns)

Separating stacked blocks with w3-section (HTML):

<div class="w3-container w3-section w3-blue"><h1>I am Blue</h1></div>
<div class="w3-container w3-section w3-green"><h1>I am Green</h1></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: 0.88
  • 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 Margins" page (Astra wiki-curation, P-Reinforce v3.1 format).