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---
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order: 1
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title:
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zh-CN: 自定义样式
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en-US: Custom style
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---
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## zh-CN
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可以自定义回到顶部按钮的样式，限制宽高：`40px * 40px`。
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## en-US
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You can customize the style of the button, just note the size limit: no more than `40px * 40px`.
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````jsx
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import { BackTop } from 'antd';
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ReactDOM.render(
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<div>
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<BackTop>
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<div className="ant-back-top-inner">UP</div>
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</BackTop>
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Scroll down to see the bottom right <strong>blue</strong> button.
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</div>,
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mountNode
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);
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````
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````css
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#components-back-top-demo-custom .ant-back-top {
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bottom: 100px;
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}
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#components-back-top-demo-custom .ant-back-top-inner {
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height: 40px;
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width: 40px;
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line-height: 40px;
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border-radius: 4px;
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background-color: #57c5f7;
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color: #fff;
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text-align: center;
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font-size: 20px;
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}
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````
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