ant-design/ant-design

import React from 'react';
import { Anchor, Col, ConfigProvider, Row } from 'antd';

/** Test usage. Do not use in your production. */

export default () => (
  <ConfigProvider
    theme={{
      components: {
        Anchor: {
          linkPaddingBlock: 100,
          linkPaddingInlineStart: 50,
        },
      },
    }}
  >
    <Row>
      <Col span={16}>
        <div id="part-1" style={{ height: '100vh', background: 'rgba(255,0,0,0.02)' }} />
        <div id="part-2" style={{ height: '100vh', background: 'rgba(0,255,0,0.02)' }} />
        <div id="part-3" style={{ height: '100vh', background: 'rgba(0,0,255,0.02)' }} />
      </Col>
      <Col span={8}>
        <Anchor
          items={[
            {
              key: 'part-1',
              href: '#part-1',
              title: 'Part 1',
            },
            {
              key: 'part-2',
              href: '#part-2',
              title: 'Part 2',
            },
            {
              key: 'part-3',
              href: '#part-3',
              title: 'Part 3',
            },
          ]}
        />
      </Col>
    </Row>
  </ConfigProvider>
);