refactor(topics): 멀티 에이전트용 지식 재편 — _Common(공통 기본기) + Domain_* 구조

에이전트 8종(대화형/프로그래머 C·S/디자이너/설계자/기획자/QA/PD/PM)에게
[공통 기본 능력 + 롤별 Specialty] 2층으로 지식을 주입하기 위한 재분류.
문서 내용·포맷은 무수정, 폴더 이동만 (6,372개 문서 수 보존 확인).

- Topic_Programming → Domain_Programming (내부 구조 보존)
- Topic_Graphic → Domain_Design
- Topic_Business → Domain_Product
- Topic_General → Domain_General
- _Common 신설: Math(구 Topic_Math_Specialty), Reasoning(구 General/From_Thinking & Reasoning),
  Reasoning_Creativity(구 General/From_창의성), Communication(Poetic_Blog_Writing + From_writing)
- 타 도메인의 From_* 폴더는 유지 (출처 표기일 뿐, 이미 도메인에 맞게 분류된 문서)
- 빈 폴더 정리 (memory/procedures)
- 에이전트→폴더 매핑은 workspace의 .astra/agent-knowledge-map.json (9개 에이전트)

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
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---
id: html-iframes
title: "HTML Iframes"
category: "Frontend"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["iframe", "inline frame", "embed page", "iframe target", "iframe src"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.89
created_at: 2026-06-23
updated_at: 2026-06-23
review_reason: ""
merge_history: []
tags: ["html", "web", "frontend", "w3schools", "embedding"]
raw_sources: ["https://www.w3schools.com/html/html_iframe.asp"]
applied_in: []
github_commit: ""
---
# [[HTML Iframes]]
## 🎯 한 줄 통찰 (One-line insight)
An HTML iframe (`<iframe>`) is an inline frame that embeds another HTML document inside the current page. [S1]
## 🧠 핵심 개념 (Core concepts)
- **`<iframe>` embeds a document** — it specifies an inline frame used to embed another document within the current HTML document. [S1]
- **`src` attribute** — defines the URL of the page to embed. [S1]
- **`title` attribute** — it is good practice to always include a `title`; screen readers use it to read out what the iframe content is. [S1]
- **Sizing** — `height` and `width` attributes (in pixels) set the iframe size; CSS `style` can be used instead. [S1]
- **Border control** — use `style="border:none;"` to remove the default border, or a CSS `border` value to customize it. [S1]
- **Link target** — naming an iframe (`name="..."`) lets a link target it so the linked page loads inside the iframe. [S1]
## 🧩 추출된 패턴 (Extracted patterns)
- **Embed pattern** — `<iframe src="url" title="description"></iframe>` to place an external/internal page inside the current one. [S1]
- **Styling pattern** — control size and border with either HTML attributes (`height`/`width`) or inline CSS (`style`). [S1]
- **Named-target pattern** — give the iframe a `name`, then point a link's `target` at that name to load content into the frame. [S1]
## 📖 세부 내용 (Details)
**HTML Iframes.** An HTML iframe is used to display a web page within a web page. The HTML `<iframe>` tag specifies an inline frame. An inline frame is used to embed another document within the current HTML document. [S1]
**Iframe Syntax.** [S1]
```html
<iframe src="url" title="description"></iframe>
```
> **Tip:** It is a good practice to always include a `title` attribute for the `<iframe>`. This is used by screen readers to read out what the content of the iframe is. [S1]
**Iframe — Set Height and Width.** Use the `height` and `width` attributes to specify the size of the iframe. The attribute values are specified in pixels by default, but they can also be in percent (like "80%"). [S1]
```html
<iframe src="demo_iframe.htm" height="200" width="300" title="Iframe Example"></iframe>
```
Or you can use the CSS `height` and `width` properties: [S1]
```html
<iframe src="demo_iframe.htm" style="height:200px;width:300px;" title="Iframe Example"></iframe>
```
**Iframe — Remove the Border.** By default, an iframe has a border around it. To remove the border, add the `style` attribute and use the CSS `border` property: [S1]
```html
<iframe src="demo_iframe.htm" style="border:none;" title="Iframe Example"></iframe>
```
With CSS, you can also change the size, style, and color of the iframe's border: [S1]
```html
<iframe src="demo_iframe.htm" style="border:2px solid red;" title="Iframe Example"></iframe>
```
**Iframe — Target for a Link.** An iframe can be used as the target frame for a link. The `target` attribute of the link must refer to the `name` attribute of the iframe. [S1]
```html
<iframe src="demo_iframe.htm" name="iframe_a" title="Iframe Example"></iframe>
<p><a href="https://www.w3schools.com" target="iframe_a">W3Schools.com</a></p>
```
**Chapter Summary.** [S1]
- The HTML `<iframe>` tag specifies an inline frame.
- The `src` attribute defines the URL of the page to embed.
- Always include a `title` attribute (for screen readers).
- The `height` and `width` attributes specify the size of the iframe.
- Use `border:none;` to remove the border around the iframe.
**HTML iframe Tag.** [S1]
| Tag | Description |
|---|---|
| `<iframe>` | Defines an inline frame |
## 🛠️ 적용 사례 (Applied in summary)
The `demo_iframe.htm` embeds (sized, borderless, custom-border) and the named `iframe_a` used as a link target are the canonical applied examples. No external project/commit applications found in the source.
## 💻 코드 패턴 (Code patterns)
Basic iframe (HTML):
```html
<iframe src="url" title="description"></iframe>
```
Sized, borderless iframe (HTML):
```html
<iframe src="demo_iframe.htm" style="height:200px;width:300px;border:none;" title="Iframe Example"></iframe>
```
Iframe as link target (HTML):
```html
<iframe src="demo_iframe.htm" name="iframe_a" title="Iframe Example"></iframe>
<a href="https://www.w3schools.com" target="iframe_a">W3Schools.com</a>
```
## ⚖️ 모순 및 업데이트 (Contradictions & updates)
No contradictions found in the source. [S1]
## ✅ 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:** 0.89
- **중복 검사 결과:** 신규 생성 (New discovery)
## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[HTML Tutorial]]
- **관련 개념:** [[HTML Div]], [[HTML JavaScript]], [[HTML Block and Inline]], [[HTML Tables]]
- **참조 맥락:** Referenced whenever one web page must be embedded inside another, or a link should load content into a named frame.
## 📚 출처 (Sources)
- [S1] W3Schools — HTML Iframes — https://www.w3schools.com/html/html_iframe.asp
## 📝 변경 이력 (Change history)
- 2026-06-23: Initial draft synthesized from the W3Schools "HTML Iframes" page (Astra wiki-curation, P-Reinforce v3.1 format).