---
id: w3css-mobile
title: "W3CSS Mobile"
category: "Programming_Language"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["building a mobile app", "w3-cell-row app layout", "W3.CSS 모바일 앱"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.85
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["w3css", "css-framework", "w3schools", "mobile-app"]
raw_sources: ["https://www.w3schools.com/w3css/w3css_mobile.asp"]
applied_in: []
github_commit: ""
---

# [[W3CSS Mobile]]

## 🎯 한 줄 통찰 (One-line insight)
A "mobile app" list layout (avatar + title + description per row) is built from the SAME `w3-cell-row`/`w3-cell` pair covered in the Cells chapter — meaning this entire chapter's app UI is really a targeted APPLICATION of two earlier chapters (Cells for row layout, Versions' Pro build for lean file size) rather than introducing any mobile-specific classes. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`w3pro.css` for mobile** — explicitly recommended here because its smaller, colorless file size suits performance-sensitive mobile app contexts (direct callback to the Versions chapter). [S1]
- **Movie-list layout via cells** — `w3-cell-row` containing one `w3-cell` for an avatar image and another `w3-cell w3-container` for title+description, per list item. [S1]
- **`w3-circle`** — rounds an image into a circle, commonly used for avatar-style app icons. [S1]
- **`w3-text-theme`** — a theme-aware text color class that adapts automatically when a color theme stylesheet is swapped in. [S1]
- **Slide-in side navigation with an avatar header** — combines `w3-sidebar`, a colored header block containing a circular avatar, and a close button (`w3-display-topright`), reusing the Sidebar chapter's open/close JS pattern verbatim. [S1]
- **Fixed header/nav/footer** — `w3-top` on both a `<header>` and `<nav>` simultaneously, plus `w3-bottom` on the footer, for a fully pinned app chrome. [S1]

## 📖 세부 내용 (Details)
- App-style list row via cells: `<div class="w3-cell-row"><div class="w3-cell"><img src="img_avatar.jpg"></div><div class="w3-cell w3-container"><h3>Frozen</h3><p>The response to the animations was ridiculous.</p></div></div>`. [S1]
- Theme-aware avatar and text: `<img class="w3-circle" src="img_avatar.jpg" alt="avatar"><h3 class="w3-text-theme">Frozen</h3>`. [S1]
- Side navigation reusing the Sidebar chapter's open/close pattern: `function openSidebar() { document.getElementById("mySidebar").style.display = "block"; } function closeSidebar() { document.getElementById("mySidebar").style.display = "none"; }`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- 현재까지 발견된 모순 사항 없음 (No contradictions found in available sources).

## 🛠️ 적용 사례 (Applied in summary)
현재 발견된 실제 적용 사례가 없습니다 — 이 챕터 전체가 Cells/Sidebar/Versions 챕터에서 배운 클래스를 재조합해 실제 모바일 앱 UI를 만드는 종합 실전 사례다. [S1]

## 💻 코드 패턴 (Code patterns)
A movie-list row using cells — the same pattern from the Cells chapter, applied to app UI (HTML):
```html
<div class="w3-cell-row">
  <div class="w3-cell">
    <img src="img_avatar.jpg">
  </div>
  <div class="w3-cell w3-container">
    <h3>Frozen</h3>
    <p>The response to the animations was ridiculous.</p>
  </div>
</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:** 0.85
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[W3.CSS Tutorial]]
- **관련 개념:** [[W3CSS Cells]], [[W3CSS Sidebar]], [[W3CSS Versions]], [[W3CSS Color Classes]]
- **참조 맥락:** Code & Miscellaneous 섹션 마지막 — 컬러 레퍼런스(Color Reference) 섹션으로 이어짐.

## 📚 출처 (Sources)
- [S1] W3Schools — W3.CSS Building a Mobile App — https://www.w3schools.com/w3css/w3css_mobile.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "W3.CSS Building a Mobile App" page (Astra wiki-curation, P-Reinforce v3.1 format).