2nd/10_Wiki/Dev/Topic_HOWTO/HOWTO_CSS_Fixed_Menu.md at 9148c358d0288dd5f679f51bdeba42e24b59f325

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Antigravity Agent 1cfd3bbb56 docs(10_Wiki): 위키 구조 정리 — 언어 튜토리얼 카테고리 폴더 제거 + 신규 자산 동기화

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2026-07-05 00:10:59 +09:00

3.4 KiB

Raw Blame History

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title

🎯 한 줄 통찰 (One-line insight)

The recipe explicitly warns that a fixed navbar OVERLAYS page content underneath it (since position: fixed removes the element from flow, other content doesn't "know" to leave room for it) — the fix is a manual margin-top on the main content equal to or greater than the navbar's height, meaning every fixed-menu layout requires the developer to keep two separate numbers (navbar height, content margin) in sync by hand, with no built-in mechanism linking them. [S1]

🧠 핵심 개념 (Core concepts)

position: fixed; top: 0; — pins the menu to the top of the VIEWPORT, staying visible during scroll. [S1]
Overlay problem — a fixed element doesn't push other content down; without compensation, the fixed menu covers the top of the page content. [S1]
Manual margin-top fix — the main content block needs margin-top at least equal to the navbar's rendered height to avoid being hidden underneath it. [S1]
Bottom variant — swapping top: 0 for bottom: 0 creates a fixed BOTTOM menu instead, with the equivalent fix being margin-bottom on the main content. [S1]

📖 세부 내용 (Details)

Fixed top menu: .navbar { position: fixed; top: 0; width: 100%; overflow: hidden; background-color: #333; } .navbar a { float: left; padding: 14px 16px; color: #f2f2f2; } .main { margin-top: 30px; }. [S1]
Fixed bottom menu: .navbar { position: fixed; bottom: 0; width: 100%; } .main { margin-bottom: 30px; }. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

없음 — 신규 레시피, 기존 문서와 모순되는 내용 없음.

🛠️ 적용 사례 (Applied in summary)

Home/News/Contact 링크가 담긴 상단 고정 메뉴를 만들고, 콘텐츠가 가려지지 않도록 margin-top을 추가하는 예제가 원문에서 직접 제시됨. [S1]

💻 코드 패턴 (Code patterns)

Fixed top navbar requiring a manual content offset (CSS):

.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  background-color: #333;
}
.main {
  margin-top: 30px; /* must match or exceed navbar height */
}

✅ 검증 상태 및 신뢰도

상태: draft
검증 단계: conceptual
출처 신뢰도: B (W3Schools — widely used educational reference)
신뢰 점수: 0.84
중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

상위/루트: W3Schools HOW TO
관련 개념: HOWTO CSS Fixed Footer, HOWTO CSS Fixed Sidebar, HOWTO JS Navbar Sticky
참조 맥락: CSS Layout & Positioning 섹션.

📚 출처 (Sources)

[S1] W3Schools — How To - Fixed Menu — https://www.w3schools.com/howto/howto_css_fixed_menu.asp

📝 변경 이력 (Change history)

2026-07-04: Initial draft synthesized from the W3Schools "How To - Fixed Menu" recipe (Astra wiki-curation, P-Reinforce v3.1 format).

3.4 KiB Raw Blame History

HOWTO CSS Fixed Menu