App.vue

<template>
  <div id="app">
      <div sm="3" class="col-md-4" > 
          <div id="nav">
            <b-nav vertical class="w-30">
            <b-nav-item> <img src="./assets/dogbark.png" alt="DogBark logo" width="100px"></b-nav-item>
            <b-nav-item>  <router-link to="/">Home</router-link> </b-nav-item>
            <b-nav-item> <router-link to="/about">About</router-link></b-nav-item>
            <b-nav-item id="specialpad">  <router-link to="/login" v-if="!authenticated">Log in</router-link>
              <a href="#" v-if="authenticated" @click="$store.dispatch('signOut')">Log out</a> </b-nav-item>
            </b-nav>
          </div>
      </div>
      <div id="othervues" sm="7" class="col-md-7" >
          <router-view/>
      </div>
  </div>


</template>

<script>
import Vue from 'vue'
import { BootstrapVue, IconsPlugin } from 'bootstrap-vue'
Vue.use(BootstrapVue)
Vue.use(IconsPlugin)


export default {
  name: 'app',
  computed: {
    authenticated(){
      return this.$store.getters.isAuthenticated;
    }
  },
  mounted() {
    // console.log(this.authenticated);
  }
}
</script>

<style lang="scss">

#app {
  font-family: Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  display: flex;

}
#nav {
  padding-left: 1.4em;
  padding-top: 2em;
  font-size: 22pt;
  a {
    font-weight: bold;
    color: #2c3e50;
    &.router-link-exact-active {
      color: #db4337;
    }
   
  }
  border-right: 2px grey solid;
  height: 100vh;
}
a.nav-link {
  padding-bottom: 40px;
}
 #specialpad{
  padding-top: 40vh;
   }
router-view {
  padding-top: 70px;
}
#othervues{
  padding-top: 70px;
}

</style>