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ant-design-vue/components/layout/demo/fixed.md

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<cn>
#### 固定头部
一般用于固定顶部导航,方便页面切换。
</cn>
<us>
#### Fixed Header
Fixed Header is generally used to fix the top navigation to facilitate page switching.
</us>
```html
<template>
<a-layout id="components-layout-demo-fixed">
<a-layout-header :style="{ position: 'fixed', width: '100%' }">
<div class="logo" />
<a-menu
theme="dark"
mode="horizontal"
:defaultSelectedKeys="['2']"
:style="{ lineHeight: '64px' }"
>
<a-menu-item key="1">nav 1</a-menu-item>
<a-menu-item key="2">nav 2</a-menu-item>
<a-menu-item key="3">nav 3</a-menu-item>
</a-menu>
</a-layout-header>
<a-layout-content :style="{ padding: '0 50px', marginTop: '64px' }">
<a-breadcrumb :style="{ margin: '16px 0' }">
<a-breadcrumb-item>Home</a-breadcrumb-item>
<a-breadcrumb-item>List</a-breadcrumb-item>
<a-breadcrumb-item>App</a-breadcrumb-item>
</a-breadcrumb>
<div :style="{ background: '#fff', padding: '24px', minHeight: '380px' }">Content</div>
</a-layout-content>
<a-layout-footer :style="{ textAlign: 'center' }">
Ant Design ©2016 Created by Ant UED
</a-layout-footer>
</a-layout>
</template>
<style>
#components-layout-demo-fixed .logo {
width: 120px;
height: 31px;
background: rgba(255,255,255,.2);
margin: 16px 24px 16px 0;
float: left;
}
</style>
```