vue-cli instant prototyping example file.

App.vue

<template>
    <div id="app">
        <h1>test</h1>
        <p>{{ greeting }} world!</p>
    </div>
</template>

<script>
    export default {
        data: function () {
            return {
                greeting: 'Hello'
            }
        }
    }
</script>

<style scoped>
    p {
        font-size: 2em;
        text-align: center;
    }
</style>