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181 lines
5.3 KiB
Markdown
181 lines
5.3 KiB
Markdown
---
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id: wiki-2026-0508-모바일-퍼스트-mobile-first
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title: 모바일 퍼스트(Mobile-First)
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category: 10_Wiki/Topics
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status: verified
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canonical_id: self
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aliases: [Mobile-First, 모바일 우선, Mobile First Design, 모바일 우선주의]
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duplicate_of: none
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source_trust_level: A
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confidence_score: 0.9
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verification_status: applied
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tags: [frontend, responsive, css, mobile, design]
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raw_sources: []
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last_reinforced: 2026-05-10
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github_commit: pending
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tech_stack:
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language: css
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framework: tailwind
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---
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# 모바일 퍼스트(Mobile-First)
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## 매 한 줄
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> **"매 작은 화면부터 design — 큰 화면 의 progressive enhancement"**. Luke Wroblewski (2009)가 제창, smallest viewport 기준 baseline CSS, larger breakpoint 의 `min-width` media query 의 progressive enhancement. 매 2026 의 mobile traffic 60%+ 환경의 default approach.
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## 매 핵심
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### 매 vs Desktop-first
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| | Mobile-first | Desktop-first |
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|---|---|---|
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| Baseline | smallest viewport | largest viewport |
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| Media query | `min-width` (up) | `max-width` (down) |
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| Mindset | progressive enhancement | graceful degradation |
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| Default 2026 | ✓ | (legacy) |
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### 매 3원칙 (Wroblewski)
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1. **Constraints force focus** — small screen 매 essential content prioritize.
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2. **Capabilities expand** — touch, GPS, camera 의 leverage.
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3. **Progressive enhancement** — base 의 small + add 의 large.
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### 매 응용
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1. **Performance budget** — mobile network slow → minimal payload first.
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2. **Touch-first UX** — 44×44px tap target (Apple HIG), 48×48dp (Material).
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3. **Content hierarchy** — most important top, fold concept abandoned.
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## 💻 패턴
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### 1. CSS mobile-first media query
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```css
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/* base — mobile (< 640px implicit) */
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.container {
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padding: 1rem;
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font-size: 14px;
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}
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.grid {
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display: grid;
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grid-template-columns: 1fr;
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gap: 1rem;
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}
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/* tablet ≥ 640px */
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@media (min-width: 640px) {
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.container { padding: 2rem; font-size: 16px; }
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.grid { grid-template-columns: repeat(2, 1fr); }
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}
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/* desktop ≥ 1024px */
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@media (min-width: 1024px) {
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.grid { grid-template-columns: repeat(3, 1fr); gap: 2rem; }
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}
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```
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### 2. Tailwind mobile-first utilities
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```tsx
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// base 의 mobile, sm:/md:/lg: 의 enhancement
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export function Card() {
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return (
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<div className="p-4 sm:p-6 lg:p-8">
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<h2 className="text-xl sm:text-2xl lg:text-3xl">Title</h2>
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<div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4">
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<Item />
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<Item />
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<Item />
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</div>
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</div>
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);
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}
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```
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### 3. Container queries (modern 2026)
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```css
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.card-container {
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container-type: inline-size;
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container-name: card;
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}
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.card { display: flex; flex-direction: column; }
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@container card (min-width: 400px) {
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.card { flex-direction: row; }
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}
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```
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### 4. Responsive image (srcset)
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```html
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<img
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src="hero-mobile.webp"
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srcset="hero-mobile.webp 480w, hero-tablet.webp 1024w, hero-desktop.webp 1920w"
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sizes="(min-width: 1024px) 1920px, (min-width: 640px) 1024px, 100vw"
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alt="Hero"
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loading="lazy"
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/>
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```
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### 5. Viewport meta + safe area
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```html
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<meta name="viewport" content="width=device-width, initial-scale=1, viewport-fit=cover">
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```
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```css
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.app {
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padding-top: env(safe-area-inset-top);
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padding-bottom: env(safe-area-inset-bottom);
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}
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```
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### 6. Touch-friendly tap targets
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```css
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button, a {
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min-width: 44px;
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min-height: 44px;
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padding: 0.75rem 1rem;
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/* Apple HIG: 44×44pt minimum */
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}
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```
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### 7. Performance: critical CSS inline
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```html
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<head>
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<style>/* critical above-fold CSS, < 14KB */</style>
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<link rel="preload" href="main.css" as="style" onload="this.rel='stylesheet'">
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</head>
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```
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## 매 결정 기준
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| 상황 | Approach |
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|---|---|
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| New project 2026 | mobile-first default. |
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| Legacy desktop site | gradual migration via container queries. |
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| Internal tool (desktop only) | desktop-first 도 OK 매 — but mobile-first 매 future-proof. |
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| Component library | container queries > viewport media queries (component reusability). |
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**기본값**: Tailwind mobile-first utilities + container queries 매 component-level.
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## 🔗 Graph
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- 변형: [[컨테이너 쿼리 (Container Queries)]]
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- 응용: [[CSS_Architecture_and_Styling|Tailwind CSS]]
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- Adjacent: [[Core Web Vitals Optimization (INP, LCP 개선)|Core Web Vitals]]
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## 🤖 LLM 활용
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**언제**: 새 web project, e-commerce, content site, public-facing app, PWA.
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**언제 X**: desktop-only enterprise tool 의 absolute desktop-first 가 효율적인 case (rare).
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## ❌ 안티패턴
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- **`max-width` 만 의 의존**: 매 reverse mobile-first defeats purpose.
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- **고정 px 의 layout**: rem/em/% 의 use.
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- **Hover-only interactions**: touch 의 hover 없음 — tap fallback 필수.
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- **Fold obsession**: 매 mobile 의 scrolling natural — fold 없음.
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- **Tap target < 44px**: thumb miss-tap.
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## 🧪 검증 / 중복
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- Verified (Wroblewski "Mobile First" 2011, Google Web.dev 2026, MDN responsive design).
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- 신뢰도 A.
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- Canonical 매 [[모바일 퍼스트(Mobile-First)]] — 매 [[모바일 우선주의 (Mobile-First) 디자인]], [[모바일 퍼스트 및 다양한 디바이스 환경을 위한 반응형 레이아웃 구축]] redirect 매 here.
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## 🕓 Changelog
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| 날짜 | 변경 |
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|---|---|
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| 2026-05-08 | Phase 1 |
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| 2026-05-10 | Manual cleanup — canonical full content + 7 patterns (CSS, Tailwind, container queries) |
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