Vue pops up a window in the table to display prompt information, using the el-popover component

The effect is as follows: when hovering over the input, it will be displayed as follows

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        <template>
          <el-popover
            placement="top"
            width="200"
            trigger="hover"
            popper-class="monitor-yt-popover"
          >
            <span>规则：{
   
   { config.unitId }}</span>
            <el-input
              v-model="config.unitId"
              slot="reference"
              type="text"
              @blur="
                getUnitScoreVal()
              "
            ></el-input>
          </el-popover>
        </template>

The style is as follows: Note that it cannot be written in the scoped style tag, the correctness is as follows

<style>
.el-popover.monitor-yt-popover {
  background-color: #fbfbfb;
  border-color: #f56c6c;
  color: #f56c6c;
}

.monitor-yt-popover .popper__arrow::after {
  border-top-color: #f56c6c !important;
}
</style>