morefun/src/pages/flyMoitor/App.vue

<template>
  <div id="app">
    <router-view />
  </div>
</template>

<style>
body {
  width: 100vw;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  background: #ccc;
  overflow: hidden;
  margin: 0;
  padding: 0;
}
div {
  width: 100%;
  height: 100%;
}
</style>