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3.8 KiB
3.8 KiB
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-images | W3CSS Images | Programming_Language | draft | conceptual |
|
B | 0.89 | 2026-07-04 | 2026-07-04 |
|
|
W3CSS Images
🎯 한 줄 통찰 (One-line insight)
w3-image scales DOWN but never scales UP beyond the image's original size — a deliberate one-directional responsiveness distinct from style="width:100%" (which scales both up and down), meaning w3-image is the right choice specifically when you want a photo to shrink gracefully on small screens without ever appearing artificially blown-up/pixelated on large ones. [S1]
🧠 핵심 개념 (Core concepts)
w3-round/w3-circle/w3-border— reused shape/border classes apply directly to<img>. [S1]w3-image— responsive: scales DOWN to fit container, never scales UP past original size. [S1]style="width:100%"— scales both up AND down (fully fluid), unlikew3-image. [S1]w3-opacity/w3-opacity-min/w3-opacity-max— three opacity intensity tiers. [S1]w3-grayscale/w3-sepia(with-min/-maxvariants) — visual filter effects; NOT supported in IE11 and earlier. [S1]w3-hover-opacity/w3-hover-grayscale/w3-hover-sepia— effects applied only on hover. [S1]w3-hover-opacity-off— the inverse: an already-transparent image (w3-opacity) becomes FULLY opaque on hover, rather than the more common "transparent on hover" pattern. [S1]- Photo album via Responsive Grid —
w3-third+w3-card+<img style="width:100%">+w3-containercaption, repeated for a gallery layout. [S1]
📖 세부 내용 (Details)
- Never-scale-up responsive image:
<img src="img_lights.jpg" alt="Lights" class="w3-image">. [S1] - Fully fluid (scales both ways):
<img src="img_lights.jpg" alt="Lights" style="width:100%">. [S1] - Grayscale (not IE11-safe):
<img src="image.jpg" class="w3-grayscale">. [S1] - Inverse hover effect:
<img src="snowtops.jpg" class="w3-opacity w3-hover-opacity-off" alt="Alps">— starts transparent, becomes fully opaque on hover. [S1]
⚖️ 모순 및 업데이트 (Contradictions & updates)
- grayscale/sepia의 브라우저 제약: w3-grayscale과 w3-sepia 클래스 모두 IE11 이하에서 지원되지 않는다는 점이 각각 명시적으로 경고됨. [S1]
🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — Responsive Grid(w3-third)로 구성한 사진 앨범이 반응형 이미지 갤러리의 대표 실전 사례다. [S1]
💻 코드 패턴 (Code patterns)
Image that fades in on hover, from transparent to fully opaque (HTML):
<img src="snowtops.jpg" class="w3-opacity w3-hover-opacity-off" alt="Alps">
✅ 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)
- 상위/루트: W3.CSS Tutorial
- 관련 개념: W3CSS Lists, W3CSS Input, W3CSS Effects
- 참조 맥락: 이미지 반응형/효과 — 입력 폼(Input) 챕터로 이어짐.
📚 출처 (Sources)
- [S1] W3Schools — W3.CSS Images — https://www.w3schools.com/w3css/w3css_images.asp
📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Images" page (Astra wiki-curation, P-Reinforce v3.1 format).