Flexible layout single selection

My style is row by row 10 Column
Jiugong grid pop-up display
The code is as follows
The list of data

const ymList = ref([
  {
    ym: " Poria cocos ",
  },
  {
    ym: " Angelica dahurica ",
  },
  {
    ym: " Cocklebur ",
  },
  {
    ym: " cicada slough ",
  },
  {
    ym: " Fructus arctii ",
  },
  {
    ym: " Mulberry leaves  ",
  },
  {
    ym: " Gegen ",
  },
  {
    ym: " Chaihu ",
  },
  {
    ym: " Vitex trifolia ",
  },
  {
    ym: " Know your mother ",
  },
]);

<el-dialog
      v-model="ymDialogVisible"
      title=" Please select "
      draggable
      width="60%"
      destroy-on-close
      center
    >
      <div class="row">
          <div class="ymdiv" @click="ymClick(item,index)" v-for="(item,index) in ymList" :key="index">
          {
   {item.ym}}
            <el-icon color="#FF0000" v-if="clickYmIndex == index"><Select /></el-icon>
          </div>
        </div>
      <template #footer>
        <span class="dialog-footer">
          <el-button @click="ymDialogVisible = false"> take   eliminate </el-button>
          <el-button type="primary" @click="ymconfirm"> indeed   set </el-button>
        </span>
      </template>
    </el-dialog>

Click event

const clickYmIndex = ref(null)
function ymClick(item, index) {
  clickYmIndex.value = index;
}
function ymconfirm(){
  zbList.value[clickIndex.value].yymc = ymList.value[clickYmIndex.value].ym;
  ymDialogVisible.value = false;
}

css style

.row {
  display: flex;
  margin-bottom: 5px;
  flex-direction: row;
  flex-wrap: wrap;
}
.ymdiv {
  width: 105px;
  height: 105px;
  line-height: 105px;
  text-align: center;
  border-collapse: collapse;
  margin-right:-1px;
  margin-bottom:-1px;
  cursor: pointer;
  border: 1px solid #a5a3a3;
}