---
id: css-horizontal-navbar
title: "CSS Horizontal Navbar"
category: "Frontend"
status: "draft"
verification_status: "conceptual"
canonical_id: ""
aliases: ["horizontal navbar", "top navigation", "horizontal navigation bar", "flex navbar", "float navbar", "sticky navbar"]
duplicate_of: ""
source_trust_level: "B"
confidence_score: 0.87
created_at: 2026-06-23
updated_at: 2026-06-23
review_reason: ""
merge_history: []
tags: ["css", "web", "frontend", "w3schools", "navbar", "navigation"]
raw_sources: ["https://www.w3schools.com/css/css_navbar_horizontal.asp"]
applied_in: []
github_commit: ""
---

# [[CSS Horizontal Navbar]]

## 🎯 한 줄 통찰 (One-line insight)
A horizontal navbar lays its list items side by side using either floating list items or a flexbox `<ul>`, then adds hover/active states, dividers, and fixed or sticky positioning. [S1]

## 🧠 핵심 개념 (Core concepts)
- **Float method** — `ul li { float: left; }` with `overflow: hidden` on the `<ul>` lays links horizontally. [S1]
- **Flex method** — `display: flex` on the `<ul>` arranges links in a row. [S1]
- **Block links** — `display: block` on `a` makes the full link area clickable. [S1]
- **Active class** — `a.active` marks the current link with a highlight color. [S1]
- **Fixed/sticky positioning** — `position: fixed` (top/bottom) or `position: sticky` (with `top`) keeps the navbar in view while scrolling. [S1]

## 🧩 추출된 패턴 (Extracted patterns)
- **Two layout methods** — floating list items (`float: left`) or a flex container (`display: flex`) both yield a horizontal row. [S1]
- **Dividers** — `border-right` on each `li` with `li:last-child { border-right: none; }` removes the trailing divider. [S1]
- **Right-aligned item** — `style="float:right"` on a single `<li>` pushes one link to the right. [S1]
- **Sticky requires an offset** — at least one of `top`/`right`/`bottom`/`left` must be set for sticky to work. [S1]

## 📖 세부 내용 (Details)
**Horizontal navbar with float** [S1]
```css
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  overflow: hidden;
  background-color: #333333;
}

ul li {
  float: left;
}

ul li a {
  display: block;
  color: white;
  text-align: center;
  padding: 14px 16px;
  text-decoration: none;
}

ul li a:hover {
  background-color: #111111;
}
```

**Horizontal navbar with flex** [S1]
```css
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #333333;
  display: flex;
}

ul li a {
  display: block;
  color: white;
  padding: 14px 16px;
  text-decoration: none;
}

ul li a:hover {
  background-color: #111111;
}
```

**Horizontal centered navbar with flex** [S1]
```css
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  background-color: #333333;
  display: flex;
  justify-content: center;
}
```

**Active state** [S1]
```css
ul li a.active {
  background-color: #04AA6D;
}
```

**Gray horizontal navbar** [S1]
```css
ul {
  list-style-type: none;
  margin: 0;
  padding: 0;
  display: flex;
  border: 1px solid #e7e7e7;
  background-color: #f3f3f3;
}
```

**Right-align the last link** [S1]
```html
<ul>
  <li><a href="#home" class="active">Home</a></li>
  <li><a href="#news">News</a></li>
  <li><a href="#contact">Contact</a></li>
  <li style="float:right"><a href="#about">About</a></li>
</ul>
```

**Border dividers** [S1]
```css
/* Add a lightgray right border to all list items, except the last */
ul li {
  float: left;
  border-right: 1px solid #bbbbbb;
}

ul li:last-child {
  border-right: none;
}
```

**Fixed top navbar** [S1]
```css
ul {
  position: fixed;
  top: 0;
  width: 100%;
}
```

**Fixed bottom navbar** [S1]
```css
ul {
  position: fixed;
  bottom: 0;
  width: 100%;
}
```

**Note** [S1]
Fixed position might not work properly on mobile devices.

**Sticky navbar** [S1]
```css
ul {
  position: sticky;
  top: 0;
}
```

**Note** [S1]
You must specify at least one of the `top`, `right`, `bottom` or `left` properties, for sticky positioning to work.

## 🛠️ 적용 사례 (Applied in summary)
The page's applied examples are the dark float navbar, the flex navbar, the centered flex navbar, the green `.active` link, the gray flex navbar, the right-aligned About link, border dividers, fixed top/bottom navbars, and the sticky navbar. No external project/commit applications found in the source.

## 💻 코드 패턴 (Code patterns)
Float-based horizontal navbar (language: CSS):
```css
ul li {
  float: left;
}

ul li a {
  display: block;
  padding: 14px 16px;
  text-decoration: none;
}
```
Sticky navbar (language: CSS):
```css
ul {
  position: sticky;
  top: 0;
}
```

## ⚖️ 비교 및 선택 기준 (Comparison & decision criteria)
- **Float vs Flex layout** — The source presents two methods for laying out a horizontal navbar: floating the list items (`ul li { float: left; }`, with `overflow: hidden` on the `<ul>`) or using a flex container (`display: flex` on the `<ul>`). Both produce a horizontal row of links; the flex method additionally enables `justify-content: center` for easy centering. [S1]
- **Fixed vs Sticky positioning** — `position: fixed` pins the navbar to the top or bottom of the viewport (but may not work properly on mobile), while `position: sticky` keeps it in flow until scrolled and requires at least one offset (`top`/`right`/`bottom`/`left`) to work. [S1]

## ⚖️ 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:** 0.87
- **중복 검사 결과:** 신규 생성 (New discovery)

## 🔗 지식 그래프 (Knowledge Graph)
- **상위/루트:** [[CSS Tutorial]]
- **관련 개념:** [[CSS Navigation Bar]], [[CSS Vertical Navbar]], [[CSS Position]], [[CSS Flexbox]]
- **참조 맥락:** Referenced when building a top or bottom navigation bar with float or flex layout.

## 📚 출처 (Sources)
- [S1] W3Schools — CSS Horizontal Navbar — https://www.w3schools.com/css/css_navbar_horizontal.asp

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