react 中echarts-for-react使用 自适应div

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import * as React from 'react' import ReactEcharts from 'echarts-for-react'   export interface IProps {   } interface IState {      }   class CapitalBudget extends React.Component<IProps, IState> {         constructor(props: IProps) {         super(props)              }       getOption () {         return {             grid: {                 left: '3%',                 right: '4%',                 bottom: '3%',                 containLabel: true             },             xAxis: {                 type: 'category',                 axisLabel: {                     formatter: '{value} 年'                 },                 axisTick: {                     alignWithLabel: true                 },                 data: ['2012', '2013', '2014', '2015', '2016', '2017', '2018']             },             yAxis: {                 type: 'value',                 axisLabel: {                     formatter: '{value} 万'                 },             },             series: [{                 data: [820, 932, 901, 934, 1290, 1330, 1320],                 type: 'line'             }]         }     }     render() {               return (                          <React.Fragment>                  <ReactEcharts                     option={this.getOption()}                                           style={{width: '100%', height: '238px'}}                 />             </React.Fragment>         )     } }   export default CapitalBudget