frames/layouts/default.vue

<template>
  <main>
    <v-app dark>
      <v-main>
        <v-container>
          <Nuxt keep-alive />
        </v-container>
      </v-main>
    </v-app>
  </main>
</template>

<script>
import Vue from 'vue'

export default Vue.extend({})
</script>