效果如下

代码如下

<template><h2>表格自定义样式</h2><div style="background-color: cadetblue; height: 600px;"><div class="regulaContainer"><el-table ref="tableRef" :data="tableData" border style="width: 100%" highlight-current-row height="400":cell-style="rowStyleClass"><el-table-column type="index" label="序号" width="100" /><el-table-column prop="date" label="Date" width="180" /><el-table-column prop="name" label="Name" width="180" /><el-table-column prop="address" label="Address" /></el-table></div></div>
</template><script lang="ts" setup >
import { getCurrentInstance, onMounted, reactive, ref, inject } from 'vue'const install = getCurrentInstance();
const tableRef = ref();
const tableData = reactive<any>([])onMounted(() => {for (let i = 0; i < 5; i++) {let obj = {date: '2016-05-01',name: 'Tom' + i,address: 'No. 189, Grove St, Los Angeles',color_index: i}tableData.push(obj);}})function rowStyleClass(row) {console.log(row.rowIndex)let style = {};if (row.rowIndex % 2) {style = {color: '#fff',borderBottom: "1px solid #EBEEF588",//background: '#065D5F !important'};return style;}else {style = {color: '#fff',borderBottom: "1px solid #EBEEF588",//background: '#065D5F !important'};return style;}
}</script> <style>
.regulaContainer {background-color: cadetblue;
}/* 表格整体背景色 */
.regulaContainer .el-table,
.regulaContainer .el-table__expanded-cell {background-color: transparent;
}/* 表格最下面的线 */
.regulaContainer .el-table__inner-wrapper::before {height: 0px;
}.regulaContainer .el-table td.el-table__cell,
.regulaContainer .el-table th.el-table__cell.is-leaf {border: 0px;
}.regulaContainer .el-table thead {color: #fff;background-color: rgb(4, 151, 145);border: 0;
}.regulaContainer .el-table th {background: transparent;
}/* 表格内tr背景色修改 */
.regulaContainer .el-table tr {background-color: transparent !important;border: 1px;/* 设置字体大小 */font-size: 16px;color: #fff;
}/*表格内td背景色修改*/
.regulaContainer .el-table td {background-color: transparent !important;border: 1px;/* 设置字体大小 */font-size: 16px;color: #fff;
}.regulaContainer .current-row {/* 选中时的图片显示 */background: rgb(26, 46, 161);background-size: 100% 100% !important;
}/* 用来设置当前页面element全局table 鼠标移入某行时的背景色*/
.regulaContainer .el-table--enable-row-hover .el-table__body tr:hover>td {background-color: rgb(60, 10, 175) !important;/* color: #f19944; *//* 设置文字颜色，可以选择不设置 */
}
</style>