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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>
130 lines
4.6 KiB
Markdown
130 lines
4.6 KiB
Markdown
---
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id: css-padding
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title: "CSS Padding"
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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: ["padding", "CSS padding", "padding shorthand", "padding-top", "element spacing"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.89
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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", "padding", "box-model"]
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raw_sources: ["https://www.w3schools.com/css/css_padding.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[CSS Padding]]
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## 🎯 한 줄 통찰 (One-line insight)
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The CSS padding properties generate space around an element's content, inside of any defined borders. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **Definition** — Padding is used to generate space around an element's content, inside of any defined borders. [S1]
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- **Four directional properties** — `padding-top`, `padding-right`, `padding-bottom`, and `padding-left` set padding on each side individually. [S1]
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- **Accepted values** — length (px, pt, cm, etc.), percentage (% of the containing element's width), or `inherit`. Negative values are not permitted. [S1]
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- **Shorthand** — the `padding` property lets you set all four sides in one declaration. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **Per-side control vs. shorthand** — use individual `padding-*` properties for asymmetric spacing, or the `padding` shorthand when expressing several sides at once. [S1]
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- **Clockwise shorthand order** — when four values are given, they apply top → right → bottom → left (clockwise from the top). [S1]
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## 📖 세부 내용 (Details)
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**What padding is**
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The CSS padding properties are used to generate space around an element's content, inside of any defined borders. [S1]
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**Individual side properties**
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CSS provides four properties for setting the padding of each side of an element: [S1]
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- `padding-top`
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- `padding-right`
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- `padding-bottom`
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- `padding-left`
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All the padding properties can accept the following values: a length (px, pt, cm, etc.), a percentage (% of the width of the containing element), or `inherit` (the padding is inherited from the parent element). Negative values are not allowed. [S1]
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**The `padding` shorthand property**
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To shorten the code, it is possible to specify all the padding properties in one property. The shorthand interprets its values by count: [S1]
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If the `padding` property has **four** values — `padding: 25px 50px 75px 100px;` — then: [S1]
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- top padding is `25px`
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- right padding is `50px`
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- bottom padding is `75px`
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- left padding is `100px`
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```css
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div {
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padding: 25px 50px 75px 100px;
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}
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```
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If the `padding` property has **three** values — `padding: 25px 50px 75px;` — then: [S1]
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- top padding is `25px`
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- right and left padding are `50px`
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- bottom padding is `75px`
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```css
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div {
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padding: 25px 50px 75px;
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}
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```
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If the `padding` property has **two** values — `padding: 25px 50px;` — then: [S1]
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- top and bottom padding are `25px`
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- right and left padding are `50px`
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```css
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div {
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padding: 25px 50px;
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}
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```
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If the `padding` property has **one** value — `padding: 25px;` — then all four paddings are `25px`. [S1]
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```css
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div {
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padding: 25px;
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}
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```
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## 🛠️ 적용 사례 (Applied in summary)
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The shorthand declarations above are the page's own applied examples, showing how 1–4 values map to the four sides. No external project/commit applications found in the source.
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## 💻 코드 패턴 (Code patterns)
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Set padding per side (language: CSS):
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```css
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div {
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padding-top: 25px;
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padding-right: 50px;
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padding-bottom: 75px;
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padding-left: 100px;
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}
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```
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Equivalent four-value shorthand:
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```css
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div {
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padding: 25px 50px 75px 100px;
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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:** 0.89
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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 Padding and Box Sizing]], [[CSS Box Model]], [[CSS Height and Width]]
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- **참조 맥락:** Referenced whenever inner spacing between content and its border needs to be controlled.
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## 📚 출처 (Sources)
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- [S1] W3Schools — CSS Padding — https://www.w3schools.com/css/css_padding.asp
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## 📝 변경 이력 (Change history)
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- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Padding" page (Astra wiki-curation, P-Reinforce v3.1 format).
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