custos-demo-gateway/src/App.vue

<template>
    <div id="app">
        <Header/>
        <div class="p-3" id="nav">
            <router-view/>
        </div>
    </div>
</template>

<script>
    import Header from "@/components/Header";

    export default {
        name: 'App',
        components: {Header}
    }
</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;*/
    }
</style>