---
id: howto-css-outline-buttons
title: "How To - Outline Buttons"
category: "Web_Recipes"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["ghost button CSS"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.83
created_at: 2026-07-04
updated_at: 2026-07-04
review_reason: ""
merge_history: []
tags: ["howto", "css", "w3schools", "buttons"]
raw_sources: ["https://www.w3schools.com/howto/howto_css_outline_buttons.asp"]
applied_in: []
github_commit: ""
---

# [[HOWTO CSS Outline Buttons]]

## 🎯 한 줄 통찰 (One-line insight)
Outline buttons INVERT `[[HOWTO CSS Alert Buttons]]`'s color model exactly: instead of a solid background color that stays constant while text stays white, each variant here starts with a WHITE background and COLORED border+text, then on `:hover` SWAPS to the solid colored background with white text — meaning the outline button's hover state is literally the alert button's resting state, and vice versa. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Resting state: colored border + colored text, white background** — `.success { border-color: #04AA6D; color: green; }`. [S1]
- **Hover state: swap to solid fill** — `.success:hover { background-color: #04AA6D; color: white; }` — the exact inverse of the resting state's color assignment. [S1]
- **`border-radius` as an optional add-on** — a single extra rule (`.btn { border-radius: 5px; }`) converts the same outline buttons to rounded outline buttons, without touching any other rule. [S1]

## 📖 세부 내용 (Details)
- Base: `.btn { border: 2px solid black; background-color: white; color: black; padding: 14px 28px; }`. [S1]
- Success example: `.success { border-color: #04AA6D; color: green; } .success:hover { background-color: #04AA6D; color: white; }`. [S1]

## ⚖️ 모순 및 업데이트 (Contradictions & updates)
- **Alert Buttons의 색상 모델을 정확히 반전시킴**: `[[HOWTO CSS Alert Buttons]]`는 배경색이 항상 칠해져 있고 hover 시 살짝 어두워지는 방식이었지만, 이 레시피는 기본 상태가 흰 배경+색 테두리이고 hover 시 완전히 반전되어 배경이 채워진다는 점이 정반대 설계로 확인됨. [S1]

## 🛠️ 적용 사례 (Applied in summary)
Success/Info/Warning/Danger/Default 5가지 아웃라인 버튼을 hover 시 색이 채워지도록 만들고, border-radius로 둥근 버전도 추가하는 예제가 원문에서 직접 제시됨. [S1]

## 💻 코드 패턴 (Code patterns)
Outline button — colors invert on hover (CSS):
```css
.btn { border: 2px solid black; background-color: white; color: black; }
.success { border-color: #04AA6D; color: green; }
.success:hover { background-color: #04AA6D; color: white; } /* inverted */
```

## ✅ 검증 상태 및 신뢰도
- **상태:** draft
- **검증 단계:** conceptual
- **출처 신뢰도:** B (W3Schools — widely used educational reference)
- **신뢰 점수:** 0.83
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[W3Schools HOW TO]]
- **관련 개념:** [[HOWTO CSS Alert Buttons]], [[HOWTO CSS Text Buttons]], [[HOWTO CSS Round Buttons]]
- **참조 맥락:** CSS Buttons 섹션.

## 📚 출처 (Sources)
- [S1] W3Schools — How To - Outline Buttons — https://www.w3schools.com/howto/howto_css_outline_buttons.asp

## 📝 변경 이력 (Change history)
- 2026-07-04: Initial draft synthesized from the W3Schools "How To - Outline Buttons" recipe (Astra wiki-curation, P-Reinforce v3.1 format).