【Vue】路由组件通过router-link设置css样式及active单击样式

<template>
  <div id="myapp">
    <!-- 第1行 -->

    <div class="left">
      <router-link class="box_1" to="/Box_1" active-class="active">
        打开Box_1组件
      </router-link>

      <router-link class="box_2" to="/Box_2" active-class="active">
        打开Box_2组件
      </router-link>
    </div>
    <div class="right">
      <Box_1></Box_1>
    </div>

    <br />
  </div>
</template>

<script>
// 引入组件

import Box_1 from "./components/Box_1";
// import Box_2 from "./components/Box_2.vue";

// 注册组件
export default {
  name: "App",
  components: {
    Box_1,
    // Box_2,
  },
  data() {
    return {};
  },
  methods: {
    getInfo(a, b) {
      this.appSchoolName = a;
      this.appAddress = b;
    },
  },
  mounted() {},
};
</script>

<style scoped>
body {
  margin: 0;
  padding: 0;
  background-color: rgb(147, 149, 149);
}
a:link {
  color: #ff0000;
  text-decoration: none;
}
#myapp {
  display: flex;
  flex-direction: row;
}
.left {
  width: 0px;
  height: 100px;
  flex-grow: 4;
  padding-top: 10px;
  /* background-color: rgb(255, 220, 220); */
}
.box_1 {
  display: block;
  width: 150px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  border: 1px rgb(224, 224, 224) solid;
  border-top-left-radius: 10px;
  border-top-right-radius: 10px;
}
.box_2 {
   display: block;
  width: 150px;
  height: 50px;
  line-height: 50px;
  text-align: center;
  margin-top: -1px;
  border: 1px rgb(224, 224, 224) solid;
  border-bottom-left-radius: 10px;
  border-bottom-right-radius: 10px;
}

.box_select {
  background-color: red;
}

.right {
  width: 0px;
  height: 100px;
  flex-grow: 6;
}
.active {
  background-color: rgb(22, 122, 214);
  color: white;
}
</style>