---
id: css-flex-items
title: "CSS Flex Items"
category: "Frontend"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["flex items", "flex-grow", "flex-shrink", "flex-basis", "order", "align-self", "flex shorthand"]
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: ["css", "web", "frontend", "w3schools", "flexbox", "flex-items"]
raw_sources: ["https://www.w3schools.com/css/css3_flexbox_items.asp"]
applied_in: []
github_commit: ""
---

# [[CSS Flex Items]]

## 🎯 한 줄 통찰 (One-line insight)
The direct child elements of a flex container automatically become flex items, controllable through six properties: `order`, `flex-grow`, `flex-shrink`, `flex-basis`, `flex`, and `align-self`. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Automatic flex items** — the direct child elements of a flex container automatically become flex items. [S1]
- **Six item-level properties** — `order`, `flex-grow`, `flex-shrink`, `flex-basis`, `flex` (shorthand), and `align-self`. [S1]
- **`align-self` overrides the container** — it overrides the default alignment set by the container's `align-items` property. [S1]

## 🧩 추출된 패턴 (Extracted patterns)
- **Item properties go on the child, not the container** — these properties are set on individual flex items (often inline in the examples). [S1]
- **`flex` as a shorthand** — combine `flex-grow`, `flex-shrink`, and `flex-basis` into a single `flex` declaration. [S1]

## 📖 세부 내용 (Details)
The direct child elements of a flex container automatically becomes flex items. Flex items can be controlled through six key properties. [S1]

**1. The `order` Property**
The `order` property specifies the display order of the flex items inside the flex container. The default value is 0, and the value must be a number. [S1]
```html
<div class="flex-container">
  <div style="order: 3">1</div>
  <div style="order: 2">2</div>
  <div style="order: 4">3</div>
  <div style="order: 1">4</div>
</div>
```

**2. The `flex-grow` Property**
The `flex-grow` property specifies how much a flex item will grow relative to the rest of the flex items. The default value is 0. [S1]
```html
<div class="flex-container">
  <div style="flex-grow: 1">1</div>
  <div style="flex-grow: 1">2</div>
  <div style="flex-grow: 4">3</div>
</div>
```

**3. The `flex-shrink` Property**
The `flex-shrink` property specifies how much a flex item will shrink relative to the rest of the flex items. The default value is 1. [S1]
```html
<div class="flex-container">
  <div>1</div>
  <div>2</div>
  <div style="flex-shrink: 2">3</div>
  <div>4</div>
  <div>5</div>
  <div>6</div>
</div>
```

**4. The `flex-basis` Property**
The `flex-basis` property specifies the initial length of a flex item. [S1]
```html
<div class="flex-container">
  <div>1</div>
  <div>2</div>
  <div style="flex-basis: 250px">3</div>
  <div>4</div>
</div>
```

**5. The `flex` Property**
The `flex` property is a shorthand property for the `flex-grow`, `flex-shrink`, and `flex-basis` properties. [S1]
```html
<div class="flex-container">
  <div>1</div>
  <div>2</div>
  <div style="flex: 1 0 150px">3</div>
  <div>4</div>
</div>
```

**6. The `align-self` Property**
The `align-self` property specifies the alignment for the selected item inside the flexible container. This property overrides the default alignment set by the container's `align-items` property. [S1]
```html
<div class="flex-container">
  <div>1</div>
  <div>2</div>
  <div style="align-self: center">3</div>
  <div>4</div>
</div>
```
```html
<div class="flex-container">
  <div>1</div>
  <div style="align-self: flex-start">2</div>
  <div style="align-self: flex-end">3</div>
  <div>4</div>
</div>
```

**Flex Item Properties Table** [S1]

| Property | Description |
|----------|-------------|
| `align-self` | Overrides container's `align-items` for individual items |
| `flex` | Shorthand for `flex-grow`, `flex-shrink`, `flex-basis` |
| `flex-basis` | Sets initial length |
| `flex-grow` | Controls growth rate relative to siblings |
| `flex-shrink` | Controls shrinkage rate relative to siblings |
| `order` | Specifies display sequence |

## 🛠️ 적용 사례 (Applied in summary)
The page's own examples apply each property inline on `<div>` flex items inside a `.flex-container`. No external project/commit applications found in the source.

## 💻 코드 패턴 (Code patterns)
Control individual flex items (language: HTML/CSS):
```html
<div class="flex-container">
  <div style="order: 1">A</div>
  <div style="flex-grow: 2">B</div>
  <div style="flex: 1 0 150px">C</div>
  <div style="align-self: center">D</div>
</div>
```

## ⚖️ 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:** 0.89
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[CSS Tutorial]]
- **관련 개념:** [[CSS Flexbox Justify Content]], [[CSS Flexbox Align Items]], [[CSS Flexbox Responsive]]
- **참조 맥락:** Referenced whenever controlling the order, growth, shrinkage, basis, or self-alignment of individual flex children.

## 📚 출처 (Sources)
- [S1] W3Schools — CSS Flex Items — https://www.w3schools.com/css/css3_flexbox_items.asp

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