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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

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title

CSS Multiple Columns

🎯 한 줄 통찰 (One-line insight)

The CSS Multi-column Layout Module lets you flow text into multiple columns — just like a newspaper — by setting how many columns (column-count) and the gap between them (column-gap). [S1]

🧠 핵심 개념 (Core concepts)

Purpose — the CSS Multi-column Layout Module enables easy definition of multiple columns of text, just like in newspapers. [S1]
Column count — column-count specifies the number of columns an element should be divided into. [S1]
Column gap — column-gap specifies the gap between the columns. [S1]
Property family — the module covers column-count, column-gap, column-rule-style, column-rule-width, column-rule-color, column-rule, column-span, and column-width. [S1]

🧩 추출된 패턴 (Extracted patterns)

Divide-by-count pattern — apply column-count: N; to any block element to split its text content into N columns automatically. [S1]
Control whitespace separately — column-gap adjusts the spacing between columns independently of the column count. [S1]

📖 세부 내용 (Details)

CSS Multi-column Layout [S1] The CSS Multi-column Layout Module enables easy definition of multiple columns of text — just like in newspapers.

CSS Multi-column Properties [S1] The page identifies these key properties: column-count, column-gap, column-rule-style, column-rule-width, column-rule-color, column-rule, column-span, and column-width.

Creating Multiple Columns [S1] The column-count property specifies the number of columns an element should be divided into. The following example will divide the text in a <div> element into 3 columns:

div {
  column-count: 3;
}

Specify the Gap Between Columns [S1] The column-gap property specifies the gap between the columns. The following example specifies a 40px gap between the columns:

div {
  column-gap: 40px;
}

CSS Multi-columns Properties [S1]

Property	Description
`column-count`	Specifies the number of columns an element should be divided into
`column-fill`	Specifies how to fill columns
`column-gap`	Specifies the gap between the columns
`column-rule`	A shorthand property for setting all the column-rule-* properties
`column-rule-color`	Specifies the color of the rule between columns
`column-rule-style`	Specifies the style of the rule between columns
`column-rule-width`	Specifies the width of the rule between columns
`column-span`	Specifies how many columns an element should span across
`column-width`	Specifies a suggested, optimal width for the columns
`columns`	A shorthand property for setting column-width and column-count

🛠️ 적용 사례 (Applied in summary)

The page's examples are the applied cases: a <div> split into 3 columns via column-count, and a 40px column-gap between columns. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Divide into columns (language: CSS):

div {
  column-count: 3;
}

Set the gap between columns (language: CSS):

div {
  column-gap: 40px;
}

⚖️ 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: 0.88
중복 검사 결과: 신규 생성 (New discovery)

🔗 지식 그래프 (Knowledge Graph)

상위/루트: CSS Tutorial
관련 개념: CSS Multiple Column Rules, CSS Grid, CSS Flexbox, CSS Text
참조 맥락: Referenced when flowing long-form text into a newspaper-style multi-column layout.

📚 출처 (Sources)

[S1] W3Schools — CSS Multiple Columns — https://www.w3schools.com/css/css3_multiple_columns.asp

📝 변경 이력 (Change history)

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

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