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>
This commit is contained in:
@@ -0,0 +1,124 @@
|
||||
---
|
||||
id: css-background-repeat
|
||||
title: "CSS Background Repeat"
|
||||
category: "Frontend"
|
||||
status: "draft"
|
||||
verification_status: "conceptual"
|
||||
canonical_id: ""
|
||||
aliases: ["background-repeat", "repeat-x", "repeat-y", "no-repeat", "background-position", "CSS background tiling"]
|
||||
duplicate_of: ""
|
||||
source_trust_level: "B"
|
||||
confidence_score: 0.88
|
||||
created_at: 2026-06-23
|
||||
updated_at: 2026-06-23
|
||||
review_reason: ""
|
||||
merge_history: []
|
||||
tags: ["css", "web", "frontend", "w3schools", "background", "background-repeat"]
|
||||
raw_sources: ["https://www.w3schools.com/css/css_background_repeat.asp"]
|
||||
applied_in: []
|
||||
github_commit: ""
|
||||
---
|
||||
|
||||
# [[CSS Background Repeat]]
|
||||
|
||||
## 🎯 한 줄 통찰 (One-line insight)
|
||||
By default a background image tiles both vertically and horizontally; `background-repeat` controls that (`repeat-x`, `repeat-y`, `no-repeat`), and `background-position` sets where the image starts. [S1]
|
||||
|
||||
## 🧠 핵심 개념 (Core concepts)
|
||||
- **Default repetition** — by default, a background image is repeated both vertically and horizontally. [S1]
|
||||
- **repeat-x** — repeats the background image horizontally only. [S1]
|
||||
- **repeat-y** — repeats the background image vertically only. [S1]
|
||||
- **no-repeat** — shows the background image only once (no tiling). [S1]
|
||||
- **background-position** — sets the starting position of the background image; for a non-repeated image this lets you place it (e.g. `right top`). [S1]
|
||||
|
||||
## 🧩 추출된 패턴 (Extracted patterns)
|
||||
- **Single image placement** — combine `no-repeat` with `background-position` to show one image at a chosen corner. [S1]
|
||||
- **Axis-limited tiling** — use `repeat-x` or `repeat-y` to repeat along one axis only (e.g. a gradient strip across the top). [S1]
|
||||
|
||||
## 📖 세부 내용 (Details)
|
||||
**Default behavior**
|
||||
By default, a background image is repeated both vertically and horizontally: [S1]
|
||||
```css
|
||||
body {
|
||||
background-image: url("gradient_bg.png");
|
||||
}
|
||||
```
|
||||
|
||||
**background-repeat: repeat-x**
|
||||
If the image is repeated only horizontally (`repeat-x`), the background will look better: [S1]
|
||||
```css
|
||||
body {
|
||||
background-image: url("gradient_bg.png");
|
||||
background-repeat: repeat-x;
|
||||
}
|
||||
```
|
||||
|
||||
**background-repeat: no-repeat**
|
||||
Showing the background image only once is specified by the `no-repeat` value: [S1]
|
||||
```css
|
||||
body {
|
||||
background-image: url("img_tree.png");
|
||||
background-repeat: no-repeat;
|
||||
}
|
||||
```
|
||||
|
||||
**background-position**
|
||||
The `background-position` property is used to specify the position of the background image. In the example below, the image is placed in the top-right corner: [S1]
|
||||
```css
|
||||
body {
|
||||
background-image: url("img_tree.png");
|
||||
background-repeat: no-repeat;
|
||||
background-position: right top;
|
||||
}
|
||||
```
|
||||
|
||||
**Property reference (from the page table):** [S1]
|
||||
|
||||
| Property | Purpose |
|
||||
|----------|---------|
|
||||
| `background-position` | Sets the starting position of a background image |
|
||||
| `background-repeat` | Sets how a background image will be repeated |
|
||||
|
||||
## 🛠️ 적용 사례 (Applied in summary)
|
||||
The CSS rules above are the page's own demonstration examples on `body`. No external project/commit applications found in the source.
|
||||
|
||||
## 💻 코드 패턴 (Code patterns)
|
||||
Tile along one axis (language: CSS):
|
||||
```css
|
||||
body {
|
||||
background-image: url("gradient_bg.png");
|
||||
background-repeat: repeat-x; /* or repeat-y */
|
||||
}
|
||||
```
|
||||
Single image placed at a corner:
|
||||
```css
|
||||
body {
|
||||
background-image: url("img_tree.png");
|
||||
background-repeat: no-repeat;
|
||||
background-position: right top;
|
||||
}
|
||||
```
|
||||
|
||||
## ⚖️ 비교 및 선택 기준 (Comparison & decision criteria)
|
||||
- **repeat-x vs repeat-y vs no-repeat** — `repeat-x` tiles horizontally only, `repeat-y` tiles vertically only, and `no-repeat` shows the image a single time; choose based on whether the image should fill an axis or appear once. [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:** 0.88
|
||||
- **중복 검사 결과:** 신규 생성 (New discovery)
|
||||
|
||||
## 🔗 지식 그래프 (Knowledge Graph)
|
||||
- **상위/루트:** [[CSS Tutorial]]
|
||||
- **관련 개념:** [[CSS Background Image]], [[CSS Background Attachment]], [[CSS Background Shorthand]], [[CSS Background Color]]
|
||||
- **참조 맥락:** Referenced whenever a background image's tiling or starting position must be controlled.
|
||||
|
||||
## 📚 출처 (Sources)
|
||||
- [S1] W3Schools — CSS Background Repeat — https://www.w3schools.com/css/css_background_repeat.asp
|
||||
|
||||
## 📝 변경 이력 (Change history)
|
||||
- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Background Repeat" page (Astra wiki-curation, P-Reinforce v3.1 format).
|
||||
Reference in New Issue
Block a user