content: import React from 'react';
  import { Surface, CartesianGrid } from 'recharts';
  
  export default React.createClass({
    render () {
      let horizontalPoints = [10, 20, 30, 100, 400];
      let verticalPoints = [100, 200, 300, 400];
  
      return (
        <Surface width={500} height={500}>
          <CartesianGrid
            width={500}
            height={500}
            verticalPoints={verticalPoints}
            horizontalPoints={horizontalPoints}
          />
        </Surface>
      );
    }
  });
  
  