2nd/10_Wiki/Dev/Topic_CSS/CSS_Background_Image.md

id, title, category, status, verification_status, canonical_id, aliases, duplicate_of, source_trust_level, confidence_score, created_at, updated_at, review_reason, merge_history, tags, raw_sources, applied_in, github_commit

id	title	category	status	verification_status	canonical_id	aliases	duplicate_of	source_trust_level	confidence_score	created_at	updated_at	review_reason	merge_history	tags	raw_sources	applied_in	github_commit
css-background-image	CSS Background Image	Frontend	draft	conceptual		background-image background image url CSS background image image background url() background		B	0.88	2026-06-23	2026-06-23			css web frontend w3schools background image	https://www.w3schools.com/css/css_background_image.asp

CSS Background Image

🎯 한 줄 통찰 (One-line insight)

The background-image property sets an image as the background of an element, and by default the image is repeated so it covers the entire element. [S1]

🧠 핵심 개념 (Core concepts)

• background-image — specifies an image to use as the background of an element. [S1]
• Default tiling — by default, the image is repeated so it covers the entire element. [S1]
• Image source — the image is referenced with the url() function (e.g. url("paper.gif")). [S1]
• Applies to any element — a background image can be set on the whole page (body) or on a specific element such as a paragraph. [S1]
• Readability matters — when using a background image, use an image that does not disturb the text. [S1]

🧩 추출된 패턴 (Extracted patterns)

• Page-wide vs element-scoped — set background-image on body for the entire page, or on a specific selector (e.g. p) to scope it to that element. [S1]
• Contrast check — choose an image that keeps the overlaid text readable; busy images make text "hardly readable." [S1]

📖 세부 내용 (Details)

Background Image The background-image property specifies an image to use as the background of an element. By default, the image is repeated so it covers the entire element. [S1]

The background image for a page can be set like this: [S1]

body {
  background-image: url("paper.gif");
}

Note: When using a background image, use an image that does not disturb the text. The page shows a counter-example where a busy image makes "the text is hardly readable": [S1]

body {
  background-image: url("bgdesert.jpg");
}

The background image can also be set for specific elements, like the <p> element: [S1]

p {
  background-image: url("paper.gif");
}

The page's property reference table lists background-image, described as the property that sets the background image for an element. [S1]

🛠️ 적용 사례 (Applied in summary)

The CSS rules above are the page's own demonstration examples for body and p. No external project/commit applications found in the source.

💻 코드 패턴 (Code patterns)

Page background image (language: CSS):

body {
  background-image: url("paper.gif");
}

Element-scoped background image:

p {
  background-image: url("paper.gif");
}

⚖️ 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 Repeat, CSS Background Attachment, CSS Background Shorthand, CSS Background Color
• 참조 맥락: Referenced whenever an image is placed behind page or element content; pairs with background-repeat and background-position to control its tiling and placement.

📚 출처 (Sources)

• [S1] W3Schools — CSS Background Image — https://www.w3schools.com/css/css_background_image.asp

📝 변경 이력 (Change history)

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