lementUI table的行高设置

   <el-table
        :data="serviceList"
        tooltip-effect="dark"
        style="width: 100%"
        :show-header="false"
        :highlight-current-row="true"
        @row-click="serviceRowClick"
        @selection-change="handleServiceSelectionChange"
        :row-style="{ height: '20px' }"
        ref="serviceTable"
      >
      ````