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W3Schools 튜토리얼을 P-Reinforce v3.1 포맷으로 위키화(영어 본문, 한/영 섹션 헤더). - Topic_HTML: 59문서 (튜토리얼+예제, 레퍼런스/메타 제외) - Topic_CSS: 190문서 (메인 + Advanced/Flexbox/Grid/RWD 전체) - Topic_JavaScript: 120문서 (코어 언어; Temporal/DOM상세/BOM/WebAPI/AJAX/jQuery/Graphics 등은 후속) 각 폴더 00_INDEX.md(MOC) 포함. 코드 verbatim, 미확인분은 "Not found in source" 표기. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
97 lines
3.7 KiB
Markdown
97 lines
3.7 KiB
Markdown
---
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id: css-syntax
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title: "CSS Syntax"
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category: "Frontend"
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status: "draft"
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verification_status: "conceptual"
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canonical_id: ""
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aliases: ["CSS rule", "CSS declaration", "selector and declaration block", "CSS property value", "CSS rule syntax"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.9
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created_at: 2026-06-23
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updated_at: 2026-06-23
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review_reason: ""
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merge_history: []
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tags: ["css", "web", "frontend", "w3schools", "syntax"]
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raw_sources: ["https://www.w3schools.com/css/css_syntax.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[CSS Syntax]]
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## 🎯 한 줄 통찰 (One-line insight)
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A CSS rule is made of a selector that points to the HTML element to style and a declaration block containing one or more `property: value;` declarations, separated by semicolons and surrounded by curly braces. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **A CSS rule has two parts** — a selector and a declaration block. [S1]
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- **Selector** — points to the HTML element you want to style. [S1]
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- **Declaration block** — contains one or more declarations separated by semicolons. [S1]
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- **Declaration** — includes a CSS property name and a value, separated by a colon. [S1]
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- **Punctuation** — multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **Rule pattern** — `selector { property: value; property: value; }`. [S1]
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- **Declaration pattern** — each declaration pairs a property and a value with a colon: `property: value;`. [S1]
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## 📖 세부 내용 (Details)
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A CSS rule consists of a **selector** and a **declaration block**. [S1]
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The selector points to the HTML element you want to style. The declaration block contains one or more declarations separated by semicolons. Each declaration includes a CSS property name and a value, separated by a colon. Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces. [S1]
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**Example** [S1]
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```css
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p {
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color: red;
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text-align: center;
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}
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```
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In this example: [S1]
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- `p` is the selector (it targets HTML `<p>` paragraph elements).
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- `color` is a property, and `red` is its value.
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- `text-align` is a property, and `center` is its value.
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The rule above makes all paragraph text red and center-aligned. [S1]
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## 🛠️ 적용 사례 (Applied in summary)
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The `p` rule above is the page's own applied example: a complete rule styling paragraph elements with `color` and `text-align`. No external project/commit applications found in the source.
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## 💻 코드 패턴 (Code patterns)
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Basic CSS rule structure (language: CSS):
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```css
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selector {
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property: value;
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property: value;
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}
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```
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Concrete example:
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```css
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p {
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color: red;
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text-align: center;
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}
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```
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## ⚖️ 모순 및 업데이트 (Contradictions & updates)
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No contradictions found in the source.
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## ✅ 검증 상태 및 신뢰도
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- **상태:** draft
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- **검증 단계:** conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
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- **출처 신뢰도:** B (W3Schools — widely used educational reference, not a primary standards body)
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- **신뢰 점수:** 0.9
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- **중복 검사 결과:** 신규 생성 (New discovery)
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## 🔗 지식 그래프 (Knowledge Graph)
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- **상위/루트:** [[CSS Tutorial]]
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- **관련 개념:** [[CSS Introduction]], [[CSS Selectors]], [[CSS Add Internal]]
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- **참조 맥락:** The grammar underlying every CSS rule; referenced whenever writing or reading any selector and declaration.
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## 📚 출처 (Sources)
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- [S1] W3Schools — CSS Syntax — https://www.w3schools.com/css/css_syntax.asp
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## 📝 변경 이력 (Change history)
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- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Syntax" page (Astra wiki-curation, P-Reinforce v3.1 format).
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