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koriweb 9609c04755 docs(10_Wiki): W3Schools 위키화 — HTML/CSS/JavaScript(core)

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>

2026-06-23 19:21:18 +09:00

4.7 KiB

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title

CSS Grid Intro

🎯 한 줄 통찰 (One-line insight)

The CSS Grid Layout Module offers a grid-based layout system with rows and columns, enabling complex, responsive two-dimensional layouts without using float or positioning. [S1]

🧠 핵심 개념 (Core concepts)

Grid Layout Module — offers a grid-based layout system, with rows and columns, making it easier to design web pages without having to use float or positioning. [S1]
Two-dimensional — CSS Grid is used for two-dimensional layout, with rows AND columns; CSS Flexbox is used for one-dimensional layout, with rows OR columns. [S1]
Grid Container — the parent element where display is set to grid or inline-grid. [S1]
Grid Items — the direct children of the grid container, which automatically become grid items. [S1]

🧩 추출된 패턴 (Extracted patterns)

Container + items model — set display: grid on the parent; direct children automatically become grid items. [S1]
Define columns on the container — grid-template-columns controls how many columns and their widths (e.g., auto auto auto for three equal columns). [S1]

📖 세부 내용 (Details)

The CSS Grid Layout Module offers a grid-based layout system, with rows and columns, making it easier to design web pages without having to use float or positioning. [S1]

Grid vs Flexbox CSS Grid is used for two-dimensional layout, with rows AND columns. CSS Flexbox is used for one-dimensional layout, with rows OR columns. [S1]

Grid Components A grid consists of two essential parts: [S1]

Grid Container — the parent element where display is set to grid or inline-grid.
Grid Items — direct children of the grid container that automatically become grid items.

Complete example [S1]

<html>
<head>
<style>
.container {
  display: grid;
  grid-template-columns: auto auto auto;
  background-color: dodgerblue;
  padding: 10px;
}
.container div {
  background-color: #f1f1f1;
  border: 1px solid black;
  padding: 10px;
  font-size: 30px;
  text-align: center;
}
</style>
</head>
<body>
<div class="container">
  <div>1</div>
  <div>2</div>
  <div>3</div>
  <div>4</div>
  <div>5</div>
</div>
</body>
</html>

The page also lists a CSS Grid properties table covering grid-related properties such as grid-template-columns, grid-template-rows, gap, grid-area, justify-content, and align-items, each with a brief description of its functionality. The full property-by-property table text was not captured verbatim from the source.

🛠️ 적용 사례 (Applied in summary)

The page's own complete example styles a .container with display: grid and grid-template-columns: auto auto auto, plus styled child <div> items. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Make a three-column grid container (language: CSS):

.container {
  display: grid;
  grid-template-columns: auto auto auto;
}

⚖️ 비교 및 선택 기준 (Comparison & decision criteria)

CSS Grid — two-dimensional layout, controlling rows AND columns together. [S1]
CSS Flexbox — one-dimensional layout, controlling rows OR columns. [S1]

⚖️ 모순 및 업데이트 (Contradictions & updates)

No contradictions found in the source.

✅ 검증 상태 및 신뢰도

상태: draft
검증 단계: conceptual (실제 적용 사례 발견 시 applied/validated로 승격 가능)
출처 신뢰도: B (W3Schools — widely used educational reference, not a primary standards body)
신뢰 점수: 0.89
중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

상위/루트: CSS Tutorial
관련 개념: CSS Grid Container, CSS Grid Tracks, CSS Grid Gaps
참조 맥락: The entry point referenced whenever building two-dimensional row-and-column page layouts.

📚 출처 (Sources)

[S1] W3Schools — CSS Grid Intro — https://www.w3schools.com/css/css_grid.asp

📝 변경 이력 (Change history)

2026-06-23: Initial draft synthesized from the W3Schools "CSS Grid Intro" page (Astra wiki-curation, P-Reinforce v3.1 format).

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