sheyangCoastalSystem/src/App.vue

<template>
  <div id="app">
    <!-- <img alt="Vue logo" src="./assets/logo.png">
    <HelloWorld msg="Welcome to Your Vue.js App"/> -->
    <router-view></router-view>
  </div>
</template>

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

<style lang="scss">
* {
  box-sizing: border-box;
}
body {
  margin: 0;
  padding: 0;
}
#app {
  width: 100vw;
  height: 100vh;
}
</style>