el-select的下拉选项的高度、字体设置

给el-option加个class

<el-select v-model="productModelSelected" placeholder="产品型号">
            <!--            给el-option加个class-->
            <el-option
                class="select_item"
                v-for="item in productModelList"
                :key="item.value"
                :label="item.label"
                :value="item.value">
            </el-option>
</el-select>


<style  scoped>

.select_item{
  height: 25px;
  line-height: 25px;
  font-size: 12px;
}
</style>