headerStyle控制表头，finalCellStyle控制表格

html

<div class="table1"><el-tablesize="mini":data="tableDataLeft"borderstripe:default-sort="defaultSort":max-height="tableMaxH":header-cell-style="headerStyle":cell-style="finalCellStyle"><el-table-column align="center"prop="entryName"label="项目名称"width="164"></el-table-column><el-table-column align="center"prop="date"label="评审日期"></el-table-column><el-table-column align="center"prop="reviewReport"label="评审报告"></el-table-column><el-table-column align="center"prop="isAdopt"label="是否通过"></el-table-column></el-table></div>

方法

headerStyle() {return {background: "#043B79",padding: "5px 0",borderColor: "#006CC1",textAlign: "center",color: "#FEFEFE",fontSize:"16px"};},headerStyle2() {return {background: "#063B63",padding: "5px 0",borderColor: "#006CC1",textAlign: "left",color: "#FEFEFE",fontSize:"16px"};},finalCellStyle(row) {let style = {background: "rgba(0, 108, 193,0)",padding: "0px 0",borderColor: "#006CC1",textAlign: "center",color: "#C7E3FF",fontSize:"14px"};return style;	 },