App.vue

<template>
  <div id="app">
    <img src="../assets/logo.png">
    <Hello :greeting="message"></Hello>
  </div>
</template>

<script lang="ts">
import Vue from 'vue'
import Component from 'vue-class-component'

import Hello from './Hello.vue'

@Component({
  components: {
    Hello
  }
})
export default class extends Vue {
  message = 'Welcome to Your Vue.js 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;
  margin-top: 60px;
}

h1,
h2 {
  font-weight: normal;
}

ul {
  list-style-type: none;
  padding: 0;
}

li {
  display: inline-block;
  margin: 0 10px;
}

a {
  color: #42b983;
}
</style>