hotWaterManagerWeb/src/App.vue

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

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

<style>
	html,
	body,
	#app {
		padding: 0;
		margin: 0;
		height: calc(100vh);
		width: 100%;
		background-color: #eaeaea;
	}
	
	a {
		text-decoration: none;
	}
</style>