docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

Topic_CSS/Topic_HTML/Topic_JavaScript/Topic_Prompt/Topic_Comfyui 등 기존 카테고리 폴더를 정리하고, Topic_Graphic/Dev 등 신규 산출물과 Topics 내부 세션/메모리 기록을 동기화.
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+---
+id: howto-css-about-page
+title: "How To - CSS About Page"
+category: "Web_Recipes"
+status: "draft"
+verification_status: "conceptual"
+canonical_id: ""
+aliases: ["about us page CSS", "team card layout"]
+duplicate_of: ""
+source_trust_level: "B"
+confidence_score: 0.8
+created_at: 2026-07-04
+updated_at: 2026-07-04
+review_reason: ""
+merge_history: []
+tags: ["howto", "css", "w3schools", "layout", "cards"]
+raw_sources: ["https://www.w3schools.com/howto/howto_css_about_page.asp"]
+applied_in: []
+github_commit: ""
+---
+
+# [[HOWTO CSS About Page]]
+
+## 🎯 한 줄 통찰 (One-line insight)
+The team-card grid uses the OLDER `float: left` + `width: 33.3%` technique (not Flexbox/Grid) combined with the classic `::after { content: ""; clear: both; display: table; }` clearfix on the row container — a reminder that this recipe predates (or intentionally avoids) the Grid & Flexbox recipes covered elsewhere in this cookbook, and that float-based column layouts still require the clearfix hack to prevent the container from collapsing to zero height. [S1]
+
+## 🧠 핵심 개념 (Core concepts)
+- **`float: left` columns** — `.column { float: left; width: 33.3%; }` creates a 3-column grid without Flexbox/Grid. [S1]
+- **Clearfix on the row** — `.container::after, .row::after { content: ""; clear: both; display: table; }` prevents the floated columns from collapsing their parent's height. [S1]
+- **`box-sizing: border-box` reset** — applied globally via `html { box-sizing: border-box; } *, *:before, *:after { box-sizing: inherit; }`, so padding doesn't add to declared widths. [S1]
+- **Responsive breakpoint** — `@media screen and (max-width: 650px) { .column { width: 100%; display: block; } }` stacks the columns on narrow screens. [S1]
+
+## 📖 세부 내용 (Details)
+- Structure: an `.about-section` intro block, followed by a `.row` of three `.column > .card` team-member blocks (image, name, title, bio, email, contact button). [S1]
+- Card styling: `.card { box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2); margin: 8px; }` gives each team member a subtle elevation effect. [S1]
+- Button hover: `.button:hover { background-color: #555; }`. [S1]
+
+## ⚖️ 모순 및 업데이트 (Contradictions & updates)
+없음 — 신규 레시피, 기존 문서와 모순되는 내용 없음.
+
+## 🛠️ 적용 사례 (Applied in summary)
+3명의 팀원 카드를 나열하는 "About Us" 페이지 레이아웃 전체가 원문에서 직접 실전 예제로 제시됨. [S1]
+
+## 💻 코드 패턴 (Code patterns)
+Float-based 3-column layout with clearfix and a responsive breakpoint (CSS):
+```css
+.column { float: left; width: 33.3%; padding: 0 8px; }
+.row::after { content: ""; clear: both; display: table; }
+@media screen and (max-width: 650px) {
+  .column { width: 100%; display: block; }
+}
+```
+
+## ✅ 검증 상태 및 신뢰도
+- **상태:** draft
+- **검증 단계:** conceptual
+- **출처 신뢰도:** B (W3Schools — widely used educational reference)
+- **신뢰 점수:** 0.80
+- **중복 검사 결과:** 신규 생성 (New discovery)
+
+## 🔗 지식 그래프 (Knowledge Graph)
+- **상위/루트:** [[W3Schools HOW TO]]
+- **관련 개념:** [[HOWTO CSS Cards]], [[HOWTO CSS Team]], [[HOWTO CSS Three Columns]]
+- **참조 맥락:** CSS Layout & Positioning 섹션.
+
+## 📚 출처 (Sources)
+- [S1] W3Schools — How To - About Page — https://www.w3schools.com/howto/howto_css_about_page.asp
+
+## 📝 변경 이력 (Change history)
+- 2026-07-04: Initial draft synthesized from the W3Schools "How To - About Page" recipe (Astra wiki-curation, P-Reinforce v3.1 format).