ant-design/components/steps/demo/icon.md

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2	带图标的步骤条

通过设置 Steps.Step 的 icon 属性，可以启用自定义图标。

import { Steps } from 'antd';
const Step = Steps.Step;

ReactDOM.render(<Steps>
  <Step status="finish" title="步骤1" icon="cloud" />
  <Step status="process" title="步骤2" icon="apple" />
  <Step status="wait" title="步骤3" icon="github" />
</Steps>, mountNode);