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Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-07-11 11:05:56 +09:00

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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-input W3CSS Input Programming_Language draft conceptual
w3-input
w3-check
w3-radio
W3.CSS 입력 폼
B 0.89 2026-07-04 2026-07-04
w3css
css-framework
w3schools
forms
input
https://www.w3schools.com/w3css/w3css_input.asp

W3CSS Input

🎯 한 줄 통찰 (One-line insight)

w3-input has a bottom border by DEFAULT — the source frames "borderless" as the exception requiring an explicit w3-border-0 override, meaning W3.CSS's baked-in visual assumption is that text inputs should look like underlined fields (Material Design style) unless you deliberately opt out. [S1]

🧠 핵심 개념 (Core concepts)

  • w3-input — text input styling; has a bottom border BY DEFAULT (add w3-border-0 to remove it, or w3-border for a full border). [S1]
  • w3-animate-input — expands the input to 100% width specifically ON FOCUS (not permanently). [S1]
  • w3-check — checkbox styling. [S1]
  • w3-radio — radio button styling. [S1]
  • w3-select — dropdown/select styling. [S1]
  • Label placement is purely structural — "Top Labels" vs. "Bottom Labels" is just whether the <label> markup comes before or after the <input> in HTML order — no different classes involved. [S1]
  • Responsive Grid for form layoutw3-row-padding + w3-third/w3-half lets multiple inputs sit on one row, stacking on small screens. [S1]

📖 세부 내용 (Details)

  • Default bottom-border input: <input class="w3-input" type="text">. [S1]
  • Borderless variant: <input class="w3-input w3-border-0" type="text">. [S1]
  • Focus-expanding input: <input class="w3-input w3-animate-input" type="text" style="width:30%">. [S1]
  • Checkbox with disabled state: <input class="w3-check" type="checkbox" checked="checked"> <label>Milk</label> <input class="w3-check" type="checkbox" disabled> <label>Lemon (Disabled)</label>. [S1]
  • Radio group: <input class="w3-radio" type="radio" name="gender" value="male" checked> <label>Male</label>. [S1]
  • Grid-based form layout: <div class="w3-row-padding"><div class="w3-third"><input class="w3-input w3-border" type="text" placeholder="One"></div>...</div>. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

  • 입력 필드 기본 테두리: w3-input이 기본적으로 하단 테두리를 가지며, 테두리 없는 형태는 w3-border-0으로 명시적으로 제거해야 한다는 점이 강조됨. [S1]

🛠️ 적용 사례 (Applied in summary)

현재 발견된 실제 적용 사례가 없습니다 — Responsive Grid로 3개 입력 필드를 한 줄에 배치하는 것이 폼 레이아웃의 대표 실전 사례다. [S1]

💻 코드 패턴 (Code patterns)

Input focus animation expanding to full width (HTML):

<input class="w3-input w3-animate-input" type="text" style="width:30%">

검증 상태 및 신뢰도

  • 상태: draft
  • 검증 단계: conceptual
  • 출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
  • 신뢰 점수: 0.89
  • 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 Input" page (Astra wiki-curation, P-Reinforce v3.1 format).