ant-design/components/tabs/demo/custom-tab-bar.tsx

import React from 'react';
import type { TabsProps } from 'antd';
import { Tabs, theme } from 'antd';
import StickyBox from 'react-sticky-box';

const items = new Array(3).fill(null).map((_, i) => {
  const id = String(i + 1);
  return {
    label: `Tab ${id}`,
    key: id,
    children: `Content of Tab Pane ${id}`,
    style: i === 0 ? { height: 200 } : undefined,
  };
});

const App: React.FC = () => {
  const {
    token: { colorBgContainer },
  } = theme.useToken();
  const renderTabBar: TabsProps['renderTabBar'] = (props, DefaultTabBar) => (
    <StickyBox offsetTop={0} offsetBottom={20} style={{ zIndex: 1 }}>
      <DefaultTabBar {...props} style={{ background: colorBgContainer }} />
    </StickyBox>
  );
  return <Tabs defaultActiveKey="1" renderTabBar={renderTabBar} items={items} />;
};

export default App;