php/www/vue/src/App.vue

<template>
  <div id="app">
    <div class="app_box">
      <router-view></router-view>
      <hr>
      <navigation></navigation>
    </div>
  </div>
</template>

<script>

export default {
  name: 'app'
}
</script>

<style>
#app {
  font-family: 'Avenir', Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-align: center;
  color: #2c3e50;
  background-color: #d3d3d3;
  position: fixed;
  overflow-y:auto;
  width: 100%;
  top:0;
  left: 0;
  bottom: 8%;
}
</style>