echarts 设置legend的样式

legend: {
          icon: 'circle',
          itemWidth: 10,
          itemHeight: 10,
          itemGap: 15, // 每一个item之间的间距
          width: '400',
          top: 'center',
          left: '62%',
          orient: 'vertical',
          formatter: (name, value) => {
            let dats = name.split('-');
            return `{name|${dats[0]}}\t\t\t{percent|${dats[1]}}`
          },
          textStyle: {
            color: '#fff',
            rich: {
              name: {
                fontSize: 12,
                color: '#7f99b7',
                padding: [0, 0, 0, 0],
                width: 40
              },
              percent: {
                fontSize: 14,
                fontWeight: 400,
                color: "white",
                padding: [0, 0, 0, 0],
              },
            }
          }
        },