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---
order: 0
title:
zh-CN: 基本
en-US: Basic
---
## zh-CN
最简单的用法。
## en-US
The most basic usage.
```jsx
import { BackTop } from 'antd';
export default () => (
<>
<BackTop />
Scroll down to see the bottom-right
<strong className="site-back-top-basic"> gray </strong>
button.
</>
);
```
```css
.site-back-top-basic {
color: rgba(64, 64, 64, 0.6);
}
```
<style>
[data-theme="dark"] .site-back-top-basic {
color: rgba(255,255,255,.45);
}
</style>