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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>
129 lines
4.5 KiB
Markdown
129 lines
4.5 KiB
Markdown
---
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id: css-button-hover-effects
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title: "CSS Button Hover Effects"
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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: ["button hover", ":hover button", "hoverable buttons", "button shadow", "disabled button", "button width"]
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duplicate_of: ""
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source_trust_level: "B"
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confidence_score: 0.88
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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", "buttons", "hover", "ui"]
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raw_sources: ["https://www.w3schools.com/css/css3_buttons_hover.asp"]
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applied_in: []
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github_commit: ""
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---
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# [[CSS Button Hover Effects]]
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## 🎯 한 줄 통찰 (One-line insight)
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The `:hover` pseudo-class changes a button's appearance on mouse-over, and combined with `transition-duration`, `box-shadow`, `opacity`, and `width` it produces hover, shadow, disabled, and full-width button effects. [S1]
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## 🧠 핵심 개념 (Core concepts)
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- **`:hover` pseudo-class** — used to change the style of a button when you mouse over it. [S1]
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- **`transition-duration`** — added to the base button so the hover change animates smoothly. [S1]
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- **`box-shadow`** — adds a shadow to a button (always-on or on hover). [S1]
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- **`opacity`** — adds transparency to create a "disabled" look (paired with `cursor: not-allowed`). [S1]
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- **`width`** — defines a specific width for a button. [S1]
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## 🧩 추출된 패턴 (Extracted patterns)
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- **Animated hover** — set `transition-duration` on `.button` and override `background-color`/`color` in `.button:hover`. [S1]
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- **Shadow on hover vs always** — `.button1` carries a permanent shadow; `.button2:hover` shows the shadow only on hover. [S1]
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- **Disabled look** — combine reduced `opacity` with `cursor: not-allowed`. [S1]
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- **Sizing** — set width in px (`250px`), percentage of parent (`50%`), or full width (`100%`). [S1]
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## 📖 세부 내용 (Details)
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**Hoverable buttons** — the CSS `:hover` pseudo-class is used to change the style of a button when you mouse over it. [S1]
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```css
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.button {
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transition-duration: 0.4s;
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}
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.button:hover {
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background-color: #4CAF50; /* Green */
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color: white;
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}
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```
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**Buttons with shadow** — the CSS `box-shadow` property is used to add a shadow to a button. `.button1` has a permanent shadow; `.button2` shows a shadow only on hover. [S1]
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```css
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.button1 {
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box-shadow: 0 8px 16px 0 rgba(0,0,0,0.6);
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}
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.button2:hover {
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box-shadow: 0 8px 16px 0 rgba(0,0,0,0.6);
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}
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```
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**Disabled button** — the CSS `opacity` property can be used to add transparency to a button (creates a "disabled" look). [S1]
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```css
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.disabledbtn {
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opacity: 0.6;
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cursor: not-allowed;
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}
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```
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**Button width** — the CSS `width` property can be used to define a specific width for a button. By default, the size of a button is determined by its text content. [S1]
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```css
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.button1 {
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width: 250px;
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}
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.button2 {
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width: 50%;
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}
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.button3 {
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width: 100%;
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}
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```
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## 🛠️ 적용 사례 (Applied in summary)
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The page's own examples are the applied cases: an animated `:hover` color swap, permanent vs hover-only `box-shadow`, a `.disabledbtn` style, and fixed/percentage/full-width button widths. No external project/commit applications found in the source.
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## 💻 코드 패턴 (Code patterns)
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Animated hover color change (language: CSS):
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```css
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.button {
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transition-duration: 0.4s;
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}
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.button:hover {
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background-color: #4CAF50;
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color: white;
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}
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```
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Show shadow only on hover (language: CSS):
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```css
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.button2:hover {
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box-shadow: 0 8px 16px 0 rgba(0,0,0,0.6);
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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:** 0.88
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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 Styling Buttons]], [[CSS Box Shadow]], [[CSS Pseudo-classes]]
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- **참조 맥락:** Referenced when adding interactive hover, shadow, disabled, or width behavior to styled buttons.
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## 📚 출처 (Sources)
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- [S1] W3Schools — CSS Button Hover Effects — https://www.w3schools.com/css/css3_buttons_hover.asp
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## 📝 변경 이력 (Change history)
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- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Button Hover Effects" page (Astra wiki-curation, P-Reinforce v3.1 format).
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