echarts legend 排列问题

option = {
    backgroundColor: '#fff',
    color: ['#E06452', '#E69638', '#54A892', '#4F77AB', '#A9D3C8', '#F0BF85', '#799FD0', '#E88A7D', '#EBA95D'],
    tooltip: {
        trigger: 'item',
        formatter: '{a} 
{b}: {c} ({d}%)'
    },
    grid: {
        top: '50%',
        x: '50%'
    },
    legend:[
        {
            orient: 'horizontal',
            x : '5%',
            bottom:'20px',
            width:'50px',
            align: 'left',
            data: ['大修', '小修'],
        },{
            orient: 'horizontal',
            x : '30%',
            bottom:'20px',
            width:'50px',
            align: 'left',
            data: ['二保', '一保'],
            
        },{
            orient: 'horizontal',
            x : '55%',