element-ui table表头如何筛选并修改筛选图标的样式

<template>
  <el-button @click="resetDateFilter">reset date filter</el-button>
  <el-button @click="clearFilter">reset all filters</el-button>
  <el-table ref="tableRef" row-key="date" class="m-table" :data="tableData" style="width: 100%">
    <el-table-column
      prop="date"
      label="Date"
      width="180"
      column-key="date"
      :filters="[
        { text: '2016-05-01', value: '2016-05-01' },
        { text: '2016-05-02', value: '2016-05-02' },
        { text: '2016-05-03', value: '2016-05-03' },
        { text: '2016-05-04', value: '2016-05-04' }
      ]"
      :filter-method="filterHandler"
    />
    <el-table-column prop="name" label="Name" width="180" />
    <el-table-column prop="address" label="Address" :formatter="formatter" />

    <el-table-column
      prop="tag"
      label="Tag"
      width="100"
      :filters="[
        { text: 'Home', value: 'Home' },
        { text: 'Office', value: 'Office' }
      ]"
      :filter-method="filterTag"
      filter-placement="bottom-end"
    >
      <template #default="scope">
        <el-tag :type="scope.row.tag === 'Home' ? 'primary' : 'success'" disable-transitions>{
   
   {
          scope.row.tag
        }}</el-tag>
      </template>
    </el-table-column>
  </el-table>
</template>

<script lang="ts" setup>
import { ref } from 'vue'
import type { TableColumnCtx, TableInstance } from 'element-plus'

interface User {
  date: string
  name: string
  address: string
  tag: string
}

const tableRef = ref<TableInstance>()

const resetDateFilter = () => {
  tableRef.value!.clearFilter(['date'])
}
const clearFilter = () => {
  tableRef.value!.clearFilter()
}
const formatter = (row: User, column: TableColumnCtx<User>) => {
  return row.address
}
const filterTag = (value: string, row: User) => {
  return row.tag === value
}
const filterHandler = (value: string, row: User, column: TableColumnCtx<User>) => {
  const property = column['property']
  return row[property] === value
}

const tableData: User[] = [
  {
    date: '2016-05-03',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
    tag: 'Home'
  },
  {
    date: '2016-05-02',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
    tag: 'Office'
  },
  {
    date: '2016-05-04',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
    tag: 'Home'
  },
  {
    date: '2016-05-01',
    name: 'Tom',
    address: 'No. 189, Grove St, Los Angeles',
    tag: 'Office'
  }
]
</script>

<style>
.m-table .el-table__column-filter-trigger .el-icon {
  display: none;
}
.m-table .el-table__column-filter-trigger::before {
  content: '666';
  color: red;
}
</style>

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