vue select下拉框添加复选框

vue select下拉框添加复选框

实现效果

直接改变选中样式：

 <el-select
            v-model="alarmStatu"
            size="small"
            multiple
            collapse-tags
            clearable
            :loading="loading"
            width="220px"
            @change="selectAll"
            @remove-tag="removeTag"
          >
            <el-option
              v-for="items in alarmStatus"
              :key="items.roleId"
              :label="items.roleName"
              :value="items.roleId"
            >
              <span class="check"