2nd/10_Wiki/Topic_CSS/CSS_Style_Inputs.md

---
id: css-styling-inputs
title: "CSS Styling Inputs"
category: "Frontend"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["styling inputs", "style input fields", "input CSS", "input width", "input border"]
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", "forms", "inputs"]
raw_sources: ["https://www.w3schools.com/css/css_form_inputs.asp"]
applied_in: []
github_commit: ""
---

# [[CSS Styling Inputs]]

## 🎯 한 줄 통찰 (One-line insight)
Input fields are styled with `width` for sizing, `padding` for inner space (with `box-sizing: border-box`), `border` / `border-radius` for outlines and rounded corners, and `background-color` / `color` for fill and text — typically targeted via `input[type=text]`. [S1]

## 🧠 핵심 개념 (Core concepts)
- **`width`** — sets the width of an input field. [S1]
- **`padding`** — adds space inside the text field. [S1]
- **`border` + `border-radius`** — changes the border size and color; `border-radius` adds rounded corners. [S1]
- **`border-bottom`** — used when you only want a bottom border (with `border: none;`). [S1]
- **`background-color` + `color`** — set the field's background fill and text color. [S1]
- **`box-sizing: border-box`** — used so padding is included within the declared width. [S1]

## 🧩 추출된 패턴 (Extracted patterns)
- **Type-scoped styling** — target text inputs specifically with `input[type=text]` to avoid restyling buttons/checkboxes. [S1]
- **Border-box sizing** — pair `width: 100%` with `box-sizing: border-box` so added padding doesn't overflow the container. [S1]
- **Underline-only field** — remove the box border (`border: none;`) and add just a `border-bottom` for a minimal underlined input. [S1]

## 📖 세부 내용 (Details)
**Style Input Width**
The `width` property is used to set the width of an input field: [S1]
```css
input {
  width: 100%;
}
```

**Style Input Padding**
The `padding` property is used to add some space inside the text field: [S1]
```css
input[type=text] {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  box-sizing: border-box;
}
```

**Style Input Border**
The `border` property is used to change the border size and color, and the `border-radius` property can be used to add rounded corners: [S1]
```css
input[type=text] {
  border: 2px solid red;
  border-radius: 8px;
}
```

**Bottom border only**
If you only want a bottom border, use the `border-bottom` property: [S1]
```css
input[type=text] {
  border: none;
  border-bottom: 1px solid red;
}
```

**Style Input Background Color and Text Color** [S1]
```css
input[type=text] {
  background-color: #3CBC8D;
  color: white;
}
```

> Note: The W3Schools page continues with further sections (focused inputs, inputs with icons, animated search, textareas, select menus, and input buttons) referenced via the page's "Next" navigation; the verbatim code for those later sections is not found in the fetched source. "Not found in source" for those additional examples.

## 🛠️ 적용 사례 (Applied in summary)
The page's examples demonstrate width, padding, border + radius, bottom-border-only, and background/text color on text inputs. No external project/commit applications found in the source.

## 💻 코드 패턴 (Code patterns)
Full-width padded text input (language: CSS):
```css
input[type=text] {
  width: 100%;
  padding: 12px;
  margin: 10px 0;
  box-sizing: border-box;
}
```
Rounded bordered input (language: CSS):
```css
input[type=text] {
  border: 2px solid red;
  border-radius: 8px;
}
```

## ⚖️ 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 Styling Forms]], [[CSS Advanced Attribute Selectors]], [[CSS Borders]]
- **참조 맥락:** Referenced when styling text input fields — sizing, spacing, borders, and colors of form controls.

## 📚 출처 (Sources)
- [S1] W3Schools — CSS Styling Inputs — https://www.w3schools.com/css/css_form_inputs.asp

## 📝 변경 이력 (Change history)
- 2026-06-23: Initial draft synthesized from the W3Schools "CSS Styling Inputs" page (Astra wiki-curation, P-Reinforce v3.1 format).