在app.vue文件里

    <template>
      <div id="app">
        <!-- 需用transition标签包裹起来 -->
        <transition>
          <router-view/>
        </transition>
        <Footer></Footer>
      </div>
    </template>

    <style lang="scss">
      
      html{
        font-size: calc( 100vw / 7.5 )
      }
      // 页面从右侧滑出左侧消失特效
      #app{
        width: 100%;
        // padding-top: 46px;
        padding-bottom: 50px;
        overflow-x: hidden;
        font-size: 14px;
      }
      .v-enter{
        opacity: 0;
        transform: translateX(100%);
      }
      .v-leave-to{
        opacity: 0;
        transform: translateX(-100%);
        // 解决页面从上往下位移问题
        position: absolute;
      }
      .v-enter-active,.v-leave-active{
        transition: all 0.35s ease;
      }
    </style>