vue 点击动态切换样式

<template>
    <div>
        <el-row>
            <el-col :span="8" class="el-col" :class="{'BorderActive':isActive===1}" >
                <div >
                    <img src="/img/map/basemap.png" @click="selectMap(1)">
                    <div class="zi-ti" :class="{'Zi-tiActive':isActive===1}">基础地形图</div>
                </div>
            </el-col>
            <el-col :span="8" class="el-col"  :class="{'BorderActive':isActive===2}">
                <div >
                    <img src="/img/map/sallite.png"  @click="selectMap(2)">
                    <div class="zi-ti" :class="{'Zi-tiActive':isActive===2}">基础影像底图</div>
                </div>
            </el-col>
            <el-col :span="8"  class="el-col" :class="{'BorderActive':isActive===3}" >
                <div>
                    <img src="/img/map/basemap.png" @click="selectMap(3)">
                    <div class="zi-ti" :class="{'Zi-tiActive':isActive===3}">基础底图</div>
                </div>
            </el-col>
        </el-row>
    </div>
</template>

<script lang="ts">
    import {Component, Vue} from 'vue-property-decorator';
    @Component
    export default class BaseMap extends Vue {
        isActive:number=1;
        selectMap(isActive: number){
            this.isActive=isActive;
        }
    }
</script>

<style scoped>
    .el-col{
         93px;
        height: 65px;
        border: 1px solid #D4D4D4;
        margin-top: 12px;
        margin-left: 5px;
        border-radius: 4px;
        background-color: #FFFFFF;
    }
    img{
         78%;
    }
    .zi-ti{
        font-size: 15px;
    }
    .BorderActive{
        border-color: #0066FF;
    }
    .Zi-tiActive{
        color: #0066FF;
    }
</style>