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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

4.4 KiB

Raw Blame History

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title

CSS Table Alignment

🎯 한 줄 통찰 (One-line insight)

text-align controls horizontal alignment and vertical-align controls vertical alignment of content inside <th> and <td> cells. [S1]

🧠 핵심 개념 (Core concepts)

text-align = horizontal — the CSS text-align property is used to set the horizontal alignment of the content in <th> or <td>. [S1]
vertical-align = vertical — the CSS vertical-align property sets the vertical alignment (like top, bottom, or middle) of the content in <th> or <td>. [S1]
Defaults for headers vs data — by default, the content of <th> elements is center-aligned and the content of <td> elements is left-aligned. [S1]
Default vertical alignment — by default, the vertical alignment of the content in a table is middle (for both <th> and <td> elements). [S1]

🧩 추출된 패턴 (Extracted patterns)

Horizontal values — text-align accepts left (aligns text to the left), right (aligns text to the right), and center (centers the text). [S1]
Vertical sizing pairing — to make a vertical alignment visible, give the cell a height and then set vertical-align (e.g. bottom). [S1]

📖 세부 내용 (Details)

Horizontal Alignment The CSS text-align property is used to set the horizontal alignment of the content in <th> or <td>. Property values: [S1]

left — aligns the text to the left
right — aligns the text to the right
center — centers the text

Note: By default, the content of <th> elements is center-aligned and the content of <td> elements is left-aligned. [S1]

Center the content of <td> elements: [S1]

td {
  text-align: center;
}

Left-align the content of <th> elements: [S1]

th {
  text-align: left;
}

Vertical Alignment The CSS vertical-align property sets the vertical alignment (like top, bottom, or middle) of the content in <th> or <td>. [S1]

Note: By default, the vertical alignment of the content in a table is middle (for both <th> and <td> elements). [S1]

The example below sets the vertical text alignment to bottom for <td> elements: [S1]

td {
  height: 50px;
  vertical-align: bottom;
}

The source illustrates these rules with sample data tables containing Firstname/Lastname/Savings columns (e.g. Peter Griffin / $100, Lois Griffin / $150, Joe Swanson / $300). [S1]

🛠️ 적용 사례 (Applied in summary)

The page's own examples are the applied cases: centering <td> content, left-aligning <th> content, and bottom vertical alignment of <td> with a 50px height. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Horizontal alignment (language: CSS):

td {
  text-align: center;
}

Vertical alignment (language: CSS):

td {
  height: 50px;
  vertical-align: bottom;
}

⚖️ 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 Table Size, CSS Table Styling, CSS Table Responsive
참조 맥락: Referenced whenever aligning header or data content inside an HTML table.

📚 출처 (Sources)

[S1] W3Schools — CSS Table Alignment — https://www.w3schools.com/css/css_table_align.asp

📝 변경 이력 (Change history)

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

4.4 KiB Raw Blame History